#031A3F#031A3F

#031A3F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.6% C 0.077 H 258.8°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#031A3F
RGB	rgb(3, 26, 63)
HSL	hsl(217, 91%, 13%)
HSV	hsv(217, 95%, 25%)
CMYK	cmyk(95.2%, 58.7%, 0%, 75.3%)
CIE-LAB	lab(9.93, 7.93, -26.18)
CIE-LCH	lch(9.93, 27.36, 286.84°)
OKLab	oklab(22.61% -0.0149 -0.0755)
OKLCH	oklch(22.61% 0.077 258.8)
XYZ	xyz(1.3038, 1.1169, 4.8485)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031A3F #3F2803

analogous

#03383F #031A3F #0A033F

triadic

#031A3F #3F031A #1A3F03

tetradic

#031A3F #3F0338 #3F2803 #033F0A

square

#031A3F #3F0338 #3F2803 #033F0A

split-complementary

#031A3F #3F0A03 #383F03

monochromatic

#010C1D #010C1D #031A3F #063279 #094AB4

Accessibility & contrast

On white

17.17

#031A3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#031A3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031A3F

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031A3F	#FFFFFF	#000000	##FFFFFF
##031A3F	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031E40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #031a3f;
/* rgb */ color: rgb(3, 26, 63);
/* oklch */ color: oklch(22.6% 0.077 258.8);

Tailwind

colors: {
  custom: {
    50: '#505574',
    500: '#031a3f',
    950: '#000000',
  },
}

SCSS

$custom: #031a3f;
$custom-light: #505574;
$custom-dark: #000000;

JSON

{
  "hex": "#031a3f",
  "rgb": {
    "r": 3,
    "g": 26,
    "b": 63
  },
  "hsl": {
    "h": 217,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.22607,
    "c": 0.07697,
    "h": 258.8
  },
  "luminance": 0.01117
}

Semantic roles & 50–950 ramp

primary

#031A3F

secondary

#815B1D

accent

#AD29FF

background

#F4F4F7

surface

#E7E8ED

border

#C3C4C8

text

#020308

muted

#78787B

Preview Lab

Preview with #031A3F

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

Preview Lab → · Contrast checker → · Palette generator →