CSS named color

Spring Green #00FF7F

The CSS keyword springgreen is #00FF7F. It is a pale vivid green in the green family. In OKLCH it sits at lightness 0.875, chroma 0.235 and hue 151.0°.

Relative luminance: 0.7305
OKLCH L · C · h: 0.875 · 0.235 · 151.0
Best text: Black 15.61:1
Hue family: Green

Inspect this color Check contrast

#00FF7F color codes

HEX: #00FF7F
RGB: rgb(0, 255, 127)
HSL: hsl(150, 100%, 50%)
OKLCH: oklch(0.875 0.235 151.0)
OKLab: oklab(0.875 -0.206 0.114)
CIELAB (D65): L* 88.47, a* -76.90, b* 47.03
XYZ (D65): X 39.59, Y 73.05, Z 32.09
CMYK (naive): cmyk(100%, 0%, 50%, 0%)

CIELAB and XYZ use the D65 white point; CSS lab() uses D50, so paste the OKLCH or HEX value into stylesheets. CMYK here is a plain formula with no press profile.

Legibility

Contrast: is #00FF7F accessible?

Black text on it reaches 15.61:1, passing AAA. White text fails at 1.34:1.

WCAG 2 gives the same ratio whichever color is the text; APCA does not, so its Lc changes sign and size with polarity.

Open the Contrast System

Black text on it

15.61:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +87
White text on it

1.34:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −18
Text is here, unreadable at 1.34:1
As text on black

15.61:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −87
As text on white

1.34:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +16
Text is here, unreadable at 1.34:1

Nearest versions that pass 4.5:1

For text on white

#008941 4.51:1

Darkening its OKLCH lightness from 0.87 to 0.55 reaches 4.51:1 on white, keeping the hue.

Compare both in the Contrast System
For text on black

#00FF7F 15.61:1

It already reaches 15.61:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #00FF7F live

Move lightness, chroma and hue in OKLCH, or drag on the map. The map is every lightness and chroma at the current hue: sRGB inside the solid area, Display P3 out to the dashed line.

The studio needs JavaScript.

Scale

Shades and tints of #00FF7F

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #00FF7F sits at step 200.

50#DFFFE5

White
1.07
Black
19.57
100#BAFFC9

White
1.15
Black
18.23
200This color#00FF7F

White
1.34
Black
15.61
300#00E370

White
1.71
Black
12.22
400#00C15F

White
2.38
Black
8.79
500#00A14E

White
3.38
Black
6.20
600#00853F

White
4.74
Black
4.42
700#006A31

White
6.76
Black
3.10
800#004E22

White
9.93
Black
2.11
900#003314

White
14.15
Black
1.48
950#001D08

White
17.80
Black
1.17

Under each step, white and black text on it; a bold figure passes 4.5:1.

Gamut

How vivid #00FF7F can get

At its lightness and hue, sRGB reaches OKLCH chroma 0.235; #00FF7F uses 100% of it. Display P3, which many recent phones and laptops show, reaches 0.264 there: 12% more.

sRGB
Display P3
Rec. 2020
Dominant wavelength

OKLCH chroma: 0.235
sRGB edge: 0.235
Display P3 edge: 0.264
Rec. 2020 edge: 0.315
Dominant wavelength: 538 nm
Excitation purity: 40%
Chromaticity: x 0.2735, y 0.5047

This color#00FF7F
Most vivid in sRGB#00FF7F
Most vivid in Display P3oklch(0.875 0.264 151.0)

On a screen without Display P3 the last tile shows the sRGB edge instead.

Use the wider color where screens show it

.accent {
  color: #00ff7f;
}
@media (color-gamut: p3) {
  .accent { color: color(display-p3 0.3837 1 0.5113); }
}

Mixing

Mixing #00FF7F

Each row is the same mix worked out in a different space, with the halfway color at its end. sRGB, which older CSS gradients use, can sag gray or dark in the middle; OKLab keeps the lightness steps even; OKLCH holds chroma and hue as it goes.

White #FFFFFF

sRGB50%#80FFBF
OKLab50%#AFFFC2
OKLCH50%#B6FFC7

Black #000000

sRGB50%#008040
OKLab50%#00632D
OKLCH50%#00632D

Its complement #FFBCF6

sRGB50%#80DEBB
OKLab50%#B8E2C0
OKLCH50%#FFCA9D

In CSS

/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #00ff7f, white);
color: color-mix(in oklch, #00ff7f 50%, white);

In use

#00FF7F in an interface

A button, a link, a heading, a focused field, an icon and a chart line in this color, on a light page and a dark one. Each check is a WCAG 2 contrast minimum: 1.4.3 for text, 1.4.11 for the rest.

Light page

Button labelText, 4.5:115.61:1 Passes
Link and body-size textText, 4.5:11.34:1 Fails
Large headingLarge text, 3:11.34:1 Fails
Icons, borders and focus ringsNon-text, 3:11.34:1 Fails

For text on this page, the nearest shade that passes is #008941 4.51:1

Dark page

Button labelText, 4.5:115.61:1 Passes
Link and body-size textText, 4.5:113.92:1 Passes
Large headingLarge text, 3:113.92:1 Passes
Icons, borders and focus ringsNon-text, 3:113.92:1 Passes

Color vision

How #00FF7F looks with color blindness

Achromatopsia changes it most, ΔE2000 29.8; tritanopia changes it least, 19.3.

Simulated with Machado et al. (2009) at full severity, in linear light.

Simulate a whole page What each type sees

Protanopia

No working red (long-wavelength) cones

#FFE874 ΔE2000 29.4

Distinct

Reads as pale soft amber
Deuteranopia

No working green (medium-wavelength) cones

#E9D789 ΔE2000 28.2

Distinct

Reads as pale soft amber
Tritanopia

No working blue (short-wavelength) cones

#00FBE1 ΔE2000 19.3

Distinct

Reads as pale soft cyan
Achromatopsia

No cone color vision; lightness only

#DEDEDE ΔE2000 29.8

Distinct

Reads as off-white

Pairing check

Checked against its complement, #FFBCF6. Their lightness contrast is only 1.13:1, so where hue collapses, add a label, icon or pattern.

Vision	The pair	ΔE2000	Verdict
Normal vision	#00FF7F · #FFBCF6	75.0	Stays distinct
Protanopia	#FFE874 · #BACCF8	45.1	Stays distinct
Deuteranopia	#E9D789 · #CAD5F4	36.2	Stays distinct
Tritanopia	#00FBE1 · #FFC0D0	55.2	Stays distinct
Achromatopsia	#DEDEDE · #D1D1D1	3.0	Easily confused

Harmony

Color harmonies for #00FF7F

Its complement is #FFBCF6, a pale soft magenta.

Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.

Open the Harmony Studio

Base#00FF7F
Complement#FFBCF6

Complementary

Open in Harmony Studio

−30°#C2E900
Base#00FF7F
+30°#00F7DC

Analogous

Open in Harmony Studio

Base#00FF7F
+120°#C7D4FF
+240°#FFC6BB

Triadic

Open in Harmony Studio

Base#00FF7F
+150°#DECBFF
+210°#FFC3D3

Split-complementary

Open in Harmony Studio

Code

Design tokens

Ready-to-paste tokens in six formats. Rename them to fit your system.

CSS custom property

:root {
  --color-springgreen: #00ff7f;
}

Tailwind config

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        springgreen: '#00ff7f',
      },
    },
  },
};

Tailwind v4 theme

/* app.css — Tailwind CSS v4 */
@import "tailwindcss";

@theme {
  --color-springgreen: oklch(0.875 0.235 151.0);
}

Design token (W3C DTCG)

{
  "color": {
    "springgreen": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0, 1, 0.498],
        "hex": "#00ff7f"
      },
      "$description": "CSS named color springgreen"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let springgreen = Color(.sRGB, red: 0.000, green: 1.000, blue: 0.498, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Springgreen = Color(0xFF00FF7F)
}

Matches

The nearest match in each system

The closest CSS name, Tailwind shade, RAL Classic paint and Crayola crayon by ΔE2000; under 2 is hard to tell apart side by side. RAL and Crayola values approximate physical colors.

Tools

Open #00FF7F in the tools

Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.

Spring Green #00FF7F

#00FF7F color codes

Contrast: is #00FF7F accessible?

Black text on it

White text on it

As text on black

As text on white

Nearest versions that pass 4.5:1

Adjust #00FF7F live

Shades and tints of #00FF7F

How vivid #00FF7F can get

Mixing #00FF7F

#00FF7F in an interface

How #00FF7F looks with color blindness

Protanopia

Deuteranopia

Tritanopia

Achromatopsia

Pairing check

Color harmonies for #00FF7F

Complementary

Analogous

Triadic

Split-complementary

Design tokens

CSS custom property

Tailwind config

Tailwind v4 theme

Design token (W3C DTCG)

SwiftUI color

Jetpack Compose color

The nearest match in each system

Similar colors

Open #00FF7F in the tools