#031C3B#031C3B

#031C3B is a very dark, moderate cyan. Relative luminance 0.012; OKLCH L 22.8% C 0.068 H 255.1°. Best body text is #FFFFFF at 17.03:1 contrast (WCAG AA passes).

Color values

HEX	#031C3B
RGB	rgb(3, 28, 59)
HSL	hsl(213, 90%, 12%)
HSV	hsv(213, 95%, 23%)
CMYK	cmyk(94.9%, 52.5%, 0%, 76.9%)
CIE-LAB	lab(10.30, 4.40, -22.74)
CIE-LCH	lch(10.30, 23.17, 280.95°)
OKLab	oklab(22.79% -0.0174 -0.0653)
OKLCH	oklch(22.79% 0.068 255.1)
XYZ	xyz(1.2419, 1.1655, 4.2963)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031C3B #3B2203

analogous

#03383B #031C3B #06033B

triadic

#031C3B #3B031C #1C3B03

tetradic

#031C3B #3B0338 #3B2203 #033B06

square

#031C3B #3B0338 #3B2203 #033B06

split-complementary

#031C3B #3B0603 #383B03

monochromatic

#010E1D #010E1D #031C3B #063875 #0953AF

Accessibility & contrast

On white

17.03

#031C3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#031C3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031C3B

17.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031C3B	#FFFFFF	#000000	##FFFFFF
##031C3B	1.00	17.03	1.23	17.03
#FFFFFF	17.03	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B1F3C

Deuteranopia (green-blind)

#011A3A

Tritanopia (blue-blind)

#002328

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #031c3b;
/* rgb */ color: rgb(3, 28, 59);
/* oklch */ color: oklch(22.8% 0.068 255.1);

Tailwind

colors: {
  custom: {
    50: '#4e5771',
    500: '#031c3b',
    950: '#000000',
  },
}

SCSS

$custom: #031c3b;
$custom-light: #4e5771;
$custom-dark: #000000;

JSON

{
  "hex": "#031c3b",
  "rgb": {
    "r": 3,
    "g": 28,
    "b": 59
  },
  "hsl": {
    "h": 213.214,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22788,
    "c": 0.06761,
    "h": 255.1
  },
  "luminance": 0.01166
}

Semantic roles & 50–950 ramp

primary

#031C3B

secondary

#7E521C

accent

#9F29FF

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020307

muted

#78787A

Preview Lab

Preview with #031C3B

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

Preview Lab → · Contrast checker → · Palette generator →