Tailwind CSS v3 color
Tailwind violet-900 #4C1D95
Tailwind CSS v3's violet-900 is #4C1D95. It is a dark vivid violet in the violet family. In OKLCH it sits at lightness 0.380, chroma 0.178 and hue 293.7°. The nearest CSS named color is indigo (#4B0082), ΔE2000 4.7 away.
- Relative luminance
- 0.0459
- OKLCH L · C · h
- 0.380 · 0.178 · 293.7
- Best text
- White 10.95:1
- Hue family
- Violet
#4C1D95 color codes
- HEX
#4C1D95- RGB
rgb(76, 29, 149)- HSL
hsl(264, 67%, 35%)- OKLCH
oklch(0.380 0.178 293.7)- OKLab
oklab(0.380 0.072 -0.163)- CIELAB (D65)
L* 25.52, a* 47.61, b* -56.87- XYZ (D65)
X 8.84, Y 4.58, Z 28.85- CMYK (naive)
cmyk(49%, 81%, 0%, 42%)
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 #4C1D95 accessible?
White text on it reaches 10.95:1, passing AAA. Black text fails at 1.91:1.
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
1.91:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc +9
-
White text on it
10.95:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −98
-
As text on black
1.91:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc −8
-
As text on white
10.95:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +94
Nearest versions that pass 4.5:1
-
For text on white
#4C1D95 10.95:1
It already reaches 10.95:1 on white, so no change is needed.
-
For text on black
#825ED7 4.53:1
Lightening its OKLCH lightness from 0.38 to 0.58 reaches 4.53:1 on black, keeping the hue.
Checking another pair? Use the Contrast Checker.
Studio
Adjust #4C1D95 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.
Scale
Shades and tints of #4C1D95
Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #4C1D95 sits at step 800.
Under each step, white and black text on it; a bold figure passes 4.5:1.
Tailwind CSS v3 violet scale
The real Tailwind palette, for comparison with the computed ramp above.
Gamut
How vivid #4C1D95 can get
At its lightness and hue, sRGB reaches OKLCH chroma 0.210; #4C1D95 uses 85% of it. Display P3, which many recent phones and laptops show, reaches 0.217 there: 3% more.
- sRGB
- Display P3
- Rec. 2020
- Dominant wavelength
- OKLCH chroma
- 0.178
- sRGB edge
- 0.210
- Display P3 edge
- 0.217
- Rec. 2020 edge
- 0.237
- Dominant wavelength
- 441 nm
- Excitation purity
- 69%
- Chromaticity
- x 0.2092, y 0.1085
- This color#4C1D95
- Most vivid in sRGB#4F00A3
- Most vivid in Display P3oklch(0.380 0.217 293.7)
On a screen without Display P3 the last tile shows the sRGB edge instead.
.accent {
color: #4c1d95;
}
@media (color-gamut: p3) {
.accent { color: color(display-p3 0.2837 0 0.6264); }
}Mixing
Mixing #4C1D95
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%#A68ECA
- OKLab50%#9E91CE
- OKLCH50%#9E91CE
Black #000000
- sRGB50%#260F4B
- OKLab50%#180537
- OKLCH50%#180537
Its complement #424700
- sRGB50%#47324B
- OKLab50%#433E59
- OKLCH50%#004C52
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #4c1d95, white);
color: color-mix(in oklch, #4c1d95 50%, white);In use
#4C1D95 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, 4.5:110.95:1 Passes
- Link and body-size textText, 4.5:110.95:1 Passes
- Large headingLarge text, 3:110.95:1 Passes
- Icons, borders and focus ringsNon-text, 3:110.95:1 Passes
Dark page
- Button labelText, 4.5:110.95:1 Passes
- Link and body-size textText, 4.5:11.71:1 Fails
- Large headingLarge text, 3:11.71:1 Fails
- Icons, borders and focus ringsNon-text, 3:11.71:1 Fails
For text on this page, the nearest shade that passes is #8B68E2 4.61:1
Color vision
How #4C1D95 looks with color blindness
Achromatopsia changes it most, ΔE2000 27.9; deuteranopia changes it least, 13.1.
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
#003E98 ΔE2000 13.9
Distinct
Reads as dark soft blue
-
Deuteranopia
No working green (medium-wavelength) cones
#003A93 ΔE2000 13.1
Distinct
Reads as dark soft blue
-
Tritanopia
No working blue (short-wavelength) cones
#353F59 ΔE2000 16.8
Distinct
Reads as dark grayish blue
-
Achromatopsia
No cone color vision; lightness only
#3C3C3C ΔE2000 27.9
Distinct
Reads as dark gray
Pairing check
Checked against its complement, #424700. Their lightness contrast is only 1.11:1, so where hue collapses, add a label, icon or pattern.
| Vision | The pair | ΔE2000 | Verdict |
|---|---|---|---|
| Normal vision | #4C1D95 · #424700 | 62.5 | Stays distinct |
| Protanopia | #003E98 · #4D4300 | 52.2 | Stays distinct |
| Deuteranopia | #003A93 · #4D4407 | 51.5 | Stays distinct |
| Tritanopia | #353F59 · #47423B | 17.2 | Stays distinct |
| Achromatopsia | #3C3C3C · #434343 | 2.3 | Easily confused |
Harmony
Color harmonies for #4C1D95
Its complement is #424700, a dark muted yellow.
Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.
Open the Harmony Studio- Base#4C1D95
- Complement#424700
Complementary
Open in Harmony Studio- −30°#0B339F
- Base#4C1D95
- +30°#6C0076
Analogous
Open in Harmony Studio- Base#4C1D95
- +120°#683100
- +240°#004E3F
Triadic
Open in Harmony Studio- Base#4C1D95
- +150°#563E00
- +210°#005209
Split-complementary
Open in Harmony StudioCode
Design tokens
Ready-to-paste tokens in six formats. Rename them to fit your system.
:root {
--color-violet-900: #4c1d95;
}// tailwind.config.js — already built in as violet-900;
// pin the v3 value explicitly like this:
module.exports = {
theme: {
extend: {
colors: {
violet: { 900: '#4c1d95' },
},
},
},
};/* app.css — Tailwind CSS v4 */
@import "tailwindcss";
@theme {
/* v4 has its own violet-900; this pins the v3 value. */
--color-violet-900: oklch(0.380 0.178 293.7);
}{
"color": {
"violet-900": {
"$type": "color",
"$value": {
"colorSpace": "srgb",
"components": [0.298, 0.1137, 0.5843],
"hex": "#4c1d95"
},
"$description": "Tailwind CSS v3 violet-900"
}
}
}import SwiftUI
enum Palette {
static let violet900 = Color(.sRGB, red: 0.298, green: 0.114, blue: 0.584, opacity: 1)
}import androidx.compose.ui.graphics.Color
object Palette {
val Violet900 = Color(0xFF4C1D95)
}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 #4C1D95 in the tools
Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.
- Color InspectorEvery format, its names, contrast and color vision in one panel.
- Contrast SystemBlack and white text on this color, with fixes in both directions.
- Harmony StudioPalettes built from this color, walked to a contrast target if you ask.
- Color Space ConverterThe same color in 34 notations, with its gamut headroom.
- Color Name FinderThe nearest of 1,055 color names by ΔE2000.