#031740#031740

#031740 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.083 H 261.3°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#031740
RGB	rgb(3, 23, 64)
HSL	hsl(220, 91%, 13%)
HSV	hsv(220, 95%, 25%)
CMYK	cmyk(95.3%, 64.1%, 0%, 74.9%)
CIE-LAB	lab(9.01, 10.82, -28.38)
CIE-LCH	lch(9.01, 30.38, 290.86°)
OKLab	oklab(21.94% -0.0125 -0.0821)
OKLCH	oklch(21.94% 0.083 261.3)
XYZ	xyz(1.2690, 1.0022, 4.9760)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031740 #402C03

analogous

#033540 #031740 #0D0340

triadic

#031740 #400317 #174003

tetradic

#031740 #400335 #402C03 #03400D

square

#031740 #400335 #402C03 #03400D

split-complementary

#031740 #400D03 #354003

monochromatic

#010B1D #010B1D #031740 #062C7A #0841B5

Accessibility & contrast

On white

17.49

#031740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#031740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031740

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031740	#FFFFFF	#000000	##FFFFFF
##031740	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C41

Deuteranopia (green-blind)

#00173F

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #031740;
/* rgb */ color: rgb(3, 23, 64);
/* oklch */ color: oklch(21.9% 0.083 261.3);

Tailwind

colors: {
  custom: {
    50: '#505375',
    500: '#031740',
    950: '#000000',
  },
}

SCSS

$custom: #031740;
$custom-light: #505375;
$custom-dark: #000000;

JSON

{
  "hex": "#031740",
  "rgb": {
    "r": 3,
    "g": 23,
    "b": 64
  },
  "hsl": {
    "h": 220.328,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.21936,
    "c": 0.08301,
    "h": 261.3
  },
  "luminance": 0.01002
}

Semantic roles & 50–950 ramp

primary

#031740

secondary

#82611D

accent

#B929FF

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #031740

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

Preview Lab → · Contrast checker → · Palette generator →