#031A3B#031A3B

#031A3B is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.2% C 0.070 H 257.2°. Best body text is #FFFFFF at 17.29:1 contrast (WCAG AA passes).

Color values

HEX	#031A3B
RGB	rgb(3, 26, 59)
HSL	hsl(215, 90%, 12%)
HSV	hsv(215, 95%, 23%)
CMYK	cmyk(94.9%, 55.9%, 0%, 76.9%)
CIE-LAB	lab(9.59, 5.99, -23.88)
CIE-LCH	lch(9.59, 24.62, 284.08°)
OKLab	oklab(22.24% -0.0156 -0.0687)
OKLCH	oklch(22.24% 0.071 257.2)
XYZ	xyz(1.1961, 1.0738, 4.2810)
Luminance	0.0107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031A3B #3B2403

analogous

#03363B #031A3B #08033B

triadic

#031A3B #3B031A #1A3B03

tetradic

#031A3B #3B0336 #3B2403 #033B08

square

#031A3B #3B0336 #3B2403 #033B08

split-complementary

#031A3B #3B0803 #363B03

monochromatic

#010D1D #010D1D #031A3B #063475 #094DAF

Accessibility & contrast

On white

17.29

#031A3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#031A3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031A3B

17.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031A3B	#FFFFFF	#000000	##FFFFFF
##031A3B	1.00	17.29	1.21	17.29
#FFFFFF	17.29	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#071D3C

Deuteranopia (green-blind)

#00183A

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #031a3b;
/* rgb */ color: rgb(3, 26, 59);
/* oklch */ color: oklch(22.2% 0.070 257.2);

Tailwind

colors: {
  custom: {
    50: '#4e5571',
    500: '#031a3b',
    950: '#000000',
  },
}

SCSS

$custom: #031a3b;
$custom-light: #4e5571;
$custom-dark: #000000;

JSON

{
  "hex": "#031a3b",
  "rgb": {
    "r": 3,
    "g": 26,
    "b": 59
  },
  "hsl": {
    "h": 215.357,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.2224,
    "c": 0.0705,
    "h": 257.2
  },
  "luminance": 0.01074
}

Semantic roles & 50–950 ramp

primary

#031A3B

secondary

#7E561C

accent

#A729FF

background

#F4F4F6

surface

#E7E8EC

border

#C3C4C7

text

#020307

muted

#78787A

Preview Lab

Preview with #031A3B

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

Preview Lab → · Contrast checker → · Palette generator →