#031D3B#031D3B

#031D3B is a very dark, moderate cyan. Relative luminance 0.012; OKLCH L 23.1% C 0.066 H 253.9°. Best body text is #FFFFFF at 16.90:1 contrast (WCAG AA passes).

Color values

HEX	#031D3B
RGB	rgb(3, 29, 59)
HSL	hsl(212, 90%, 12%)
HSV	hsv(212, 95%, 23%)
CMYK	cmyk(94.9%, 50.8%, 0%, 76.9%)
CIE-LAB	lab(10.66, 3.62, -22.17)
CIE-LCH	lch(10.66, 22.46, 279.27°)
OKLab	oklab(23.07% -0.0184 -0.0636)
OKLCH	oklch(23.07% 0.066 253.9)
XYZ	xyz(1.2660, 1.2137, 4.3044)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031D3B #3B2103

analogous

#03393B #031D3B #05033B

triadic

#031D3B #3B031D #1D3B03

tetradic

#031D3B #3B0339 #3B2103 #033B05

square

#031D3B #3B0339 #3B2103 #033B05

split-complementary

#031D3B #3B0503 #393B03

monochromatic

#010E1D #010E1D #031D3B #063A75 #0956AF

Accessibility & contrast

On white

16.90

#031D3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#031D3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031D3B

16.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031D3B	#FFFFFF	#000000	##FFFFFF
##031D3B	1.00	16.90	1.24	16.90
#FFFFFF	16.90	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D203C

Deuteranopia (green-blind)

#031A3A

Tritanopia (blue-blind)

#002429

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #031d3b;
/* rgb */ color: rgb(3, 29, 59);
/* oklch */ color: oklch(23.1% 0.066 253.9);

Tailwind

colors: {
  custom: {
    50: '#4e5871',
    500: '#031d3b',
    950: '#000000',
  },
}

SCSS

$custom: #031d3b;
$custom-light: #4e5871;
$custom-dark: #000000;

JSON

{
  "hex": "#031d3b",
  "rgb": {
    "r": 3,
    "g": 29,
    "b": 59
  },
  "hsl": {
    "h": 212.143,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.23065,
    "c": 0.06621,
    "h": 253.9
  },
  "luminance": 0.01214
}

Semantic roles & 50–950 ramp

primary

#031D3B

secondary

#7E501C

accent

#9C29FF

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020307

muted

#78787A

Preview Lab

Preview with #031D3B

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

Preview Lab → · Contrast checker → · Palette generator →