#04031D#04031D

#04031D is a very dark, muted blue. Relative luminance 0.002; OKLCH L 12.7% C 0.058 H 277.1°. Best body text is #FFFFFF at 20.27:1 contrast (WCAG AA passes).

Color values

HEX	#04031D
RGB	rgb(4, 3, 29)
HSL	hsl(242, 81%, 6%)
HSV	hsv(242, 90%, 11%)
CMYK	cmyk(86.2%, 89.7%, 0%, 88.6%)
CIE-LAB	lab(1.62, 5.47, -13.89)
CIE-LCH	lch(1.62, 14.93, 291.51°)
OKLab	oklab(12.71% 0.0072 -0.0576)
OKLCH	oklch(12.71% 0.058 277.1)
XYZ	xyz(0.3043, 0.1796, 1.1808)
Luminance	0.0018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 9.34

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04031D #1C1D03

analogous

#030F1D #04031D #11031D

triadic

#04031D #1D0403 #031D04

tetradic

#04031D #1D030F #1C1D03 #031D11

square

#04031D #1D030F #1C1D03 #031D11

split-complementary

#04031D #1D1103 #0F1D03

monochromatic

#04031C #04031C #04031D #0C0954 #130E8C

Accessibility & contrast

On white

20.27

#04031D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#04031D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04031D

20.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04031D	#FFFFFF	#000000	##FFFFFF
##04031D	1.00	20.27	1.04	20.27
#FFFFFF	20.27	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00071E

Deuteranopia (green-blind)

#00051C

Tritanopia (blue-blind)

#00080E

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #04031d;
/* rgb */ color: rgb(4, 3, 29);
/* oklch */ color: oklch(12.7% 0.058 277.1);

Tailwind

colors: {
  custom: {
    50: '#484858',
    500: '#04031d',
    950: '#000000',
  },
}

SCSS

$custom: #04031d;
$custom-light: #484858;
$custom-dark: #000000;

JSON

{
  "hex": "#04031d",
  "rgb": {
    "r": 4,
    "g": 3,
    "b": 29
  },
  "hsl": {
    "h": 242.308,
    "s": 81.25,
    "l": 6.275
  },
  "oklch": {
    "l": 0.12707,
    "c": 0.05808,
    "h": 277.1
  },
  "luminance": 0.0018
}

Semantic roles & 50–950 ramp

primary

#04031D

secondary

#5E611B

accent

#F830F0

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000003

muted

#777778

Preview Lab

Preview with #04031D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →