RAL Classic color
RAL 5021 Water blue #2F2A7F
RAL 5021 Water blue is shown here as #2F2A7F, a widely published sRGB approximation of the printed swatch. It is a dark soft blue in the blue family. In OKLCH it sits at lightness 0.348, chroma 0.138 and hue 279.0°. The nearest CSS named color is midnightblue (#191970), ΔE2000 5.0 away.
- Relative luminance
- 0.0379
- OKLCH L · C · h
- 0.348 · 0.138 · 279.0
- Best text
- White 11.94:1
- Hue family
- Blue
#2F2A7F color codes
- HEX
#2F2A7F- RGB
rgb(47, 42, 127)- HSL
hsl(244, 50%, 33%)- OKLCH
oklch(0.348 0.138 279.0)- OKLab
oklab(0.348 0.022 -0.137)- CIELAB (D65)
L* 22.97, a* 29.20, b* -47.43- XYZ (D65)
X 5.83, Y 3.79, Z 20.50- CMYK (naive)
cmyk(63%, 67%, 0%, 50%)
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.
RAL and RAL Classic are trademarks of RAL gGmbH, which this site is not affiliated with. The sRGB value is an approximation of the printed swatch; check a physical RAL color card before you specify a paint.
Legibility
Contrast: is #2F2A7F accessible?
White text on it reaches 11.94:1, passing AAA. Black text fails at 1.75:1.
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
1.75:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc 0
-
White text on it
11.94:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc −100
-
As text on black
1.75:1
- AA fails
- AA large fails
- AAA fails
- APCA Lc 0
-
As text on white
11.94:1
- AA passes
- AA large passes
- AAA passes
- APCA Lc +96
Nearest versions that pass 4.5:1
-
For text on white
#2F2A7F 11.94:1
It already reaches 11.94:1 on white, so no change is needed.
-
For text on black
#686DC8 4.61:1
Lightening its OKLCH lightness from 0.35 to 0.57 reaches 4.61:1 on black, keeping the hue.
Checking another pair? Use the Contrast Checker.
Studio
Adjust #2F2A7F 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 #2F2A7F
Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #2F2A7F sits at step 800.
Under each step, white and black text on it; a bold figure passes 4.5:1.
Gamut
How vivid #2F2A7F can get
At its lightness and hue, sRGB reaches OKLCH chroma 0.212; #2F2A7F uses 65% of it. Display P3 reaches no further at this hue.
- sRGB
- Display P3
- Rec. 2020
- Dominant wavelength
- OKLCH chroma
- 0.138
- sRGB edge
- 0.212
- Display P3 edge
- 0.215
- Rec. 2020 edge
- 0.231
- Dominant wavelength
- 462 nm
- Excitation purity
- 69%
- Chromaticity
- x 0.1935, y 0.1259
- This color#2F2A7F
- Most vivid in sRGB#3100A3
- Most vivid in Display P3oklch(0.348 0.215 279.0)
On a screen without Display P3 the last tile shows the sRGB edge instead.
.accent {
color: #2f2a7f;
}
@media (color-gamut: p3) {
.accent { color: color(display-p3 0.1736 0 0.6185); }
}Mixing
Mixing #2F2A7F
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%#9795BF
- OKLab50%#8D92C1
- OKLCH50%#8D92C1
Black #000000
- sRGB50%#181540
- OKLab50%#0C0A2D
- OKLCH50%#0C0A2D
Its complement #443A00
- sRGB50%#3A3240
- OKLab50%#36384B
- OKLCH50%#651B2F
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #2f2a7f, white);
color: color-mix(in oklch, #2f2a7f 50%, white);In use
#2F2A7F 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, 4.5:111.94:1 Passes
- Link and body-size textText, 4.5:111.94:1 Passes
- Large headingLarge text, 3:111.94:1 Passes
- Icons, borders and focus ringsNon-text, 3:111.94:1 Passes
Dark page
- Button labelText, 4.5:111.94:1 Passes
- Link and body-size textText, 4.5:11.56:1 Fails
- Large headingLarge text, 3:11.56:1 Fails
- Icons, borders and focus ringsNon-text, 3:11.56:1 Fails
For text on this page, the nearest shade that passes is #6F74D0 4.53:1
Color vision
How #2F2A7F looks with color blindness
Achromatopsia changes it most, ΔE2000 25.0; deuteranopia changes it least, 7.0.
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
#003A82 ΔE2000 8.8
Noticeable
Reads as dark soft blue
-
Deuteranopia
No working green (medium-wavelength) cones
#00337D ΔE2000 7.0
Noticeable
Reads as dark soft blue
-
Tritanopia
No working blue (short-wavelength) cones
#004050 ΔE2000 17.2
Distinct
Reads as dark muted blue
-
Achromatopsia
No cone color vision; lightness only
#373737 ΔE2000 25.0
Distinct
Reads as dark gray
Pairing check
Checked against its complement, #443A00. Their lightness contrast is only 1.05:1, so where hue collapses, add a label, icon or pattern.
| Vision | The pair | ΔE2000 | Verdict |
|---|---|---|---|
| Normal vision | #2F2A7F · #443A00 | 50.9 | Stays distinct |
| Protanopia | #003A82 · #413800 | 46.9 | Stays distinct |
| Deuteranopia | #00337D · #443C04 | 48.1 | Stays distinct |
| Tritanopia | #004050 · #4A3430 | 31.7 | Stays distinct |
| Achromatopsia | #373737 · #3A3A3A | 1.0 | Easily confused |
Harmony
Color harmonies for #2F2A7F
Its complement is #443A00, a dark muted brown, on the warm side of the wheel.
Hue rotations in OKLCH, mapped into sRGB by trimming chroma so hue and lightness stay put.
Open the Harmony Studio- Base#2F2A7F
- Complement#443A00
Complementary
Open in Harmony Studio- −30°#003C69
- Base#2F2A7F
- +30°#4F1C6F
Analogous
Open in Harmony Studio- Base#2F2A7F
- +120°#671D00
- +240°#00462A
Triadic
Open in Harmony Studio- Base#2F2A7F
- +150°#533100
- +210°#2A4300
Split-complementary
Open in Harmony StudioCode
Design tokens
Ready-to-paste tokens in six formats. Rename them to fit your system.
:root {
--color-ral-5021: #2f2a7f;
}// tailwind.config.js
module.exports = {
theme: {
extend: {
colors: {
'ral-5021': '#2f2a7f',
},
},
},
};/* app.css — Tailwind CSS v4 */
@import "tailwindcss";
@theme {
--color-ral-5021: oklch(0.348 0.138 279.0);
}{
"color": {
"ral-5021": {
"$type": "color",
"$value": {
"colorSpace": "srgb",
"components": [0.1843, 0.1647, 0.498],
"hex": "#2f2a7f"
},
"$description": "RAL 5021 Water blue (approximate sRGB)"
}
}
}import SwiftUI
enum Palette {
static let ral5021 = Color(.sRGB, red: 0.184, green: 0.165, blue: 0.498, opacity: 1)
}import androidx.compose.ui.graphics.Color
object Palette {
val Ral5021 = Color(0xFF2F2A7F)
}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 #2F2A7F 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.