#031B4E#031B4E

#031B4E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.099 H 261.9°. Best body text is #FFFFFF at 16.53:1 contrast (WCAG AA passes).

Color values

HEX	#031B4E
RGB	rgb(3, 27, 78)
HSL	hsl(221, 93%, 16%)
HSV	hsv(221, 96%, 31%)
CMYK	cmyk(96.2%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(11.64, 14.23, -33.86)
CIE-LCH	lch(11.64, 36.73, 292.80°)
OKLab	oklab(24.34% -0.014 -0.098)
OKLCH	oklch(24.34% 0.099 261.9)
XYZ	xyz(1.8041, 1.3530, 7.3723)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.47

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031B4E #4E3603

analogous

#03404E #031B4E #10034E

triadic

#031B4E #4E031B #1B4E03

tetradic

#031B4E #4E0340 #4E3603 #034E10

square

#031B4E #4E0340 #4E3603 #034E10

split-complementary

#031B4E #4E1003 #404E03

monochromatic

#010A1D #010A1D #031B4E #052F89 #0844C4

Accessibility & contrast

On white

16.53

#031B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#031B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031B4E

16.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031B4E	#FFFFFF	#000000	##FFFFFF
##031B4E	1.00	16.53	1.27	16.53
#FFFFFF	16.53	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002250

Deuteranopia (green-blind)

#001B4D

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #031b4e;
/* rgb */ color: rgb(3, 27, 78);
/* oklch */ color: oklch(24.3% 0.099 261.9);

Tailwind

colors: {
  custom: {
    50: '#555680',
    500: '#031b4e',
    950: '#000000',
  },
}

SCSS

$custom: #031b4e;
$custom-light: #555680;
$custom-dark: #000000;

JSON

{
  "hex": "#031b4e",
  "rgb": {
    "r": 3,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 220.8,
    "s": 92.593,
    "l": 15.882
  },
  "oklch": {
    "l": 0.24338,
    "c": 0.09902,
    "h": 261.9
  },
  "luminance": 0.01353
}

Semantic roles & 50–950 ramp

primary

#031B4E

secondary

#8E6B1E

accent

#BA29FF

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03030A

muted

#78787C

Preview Lab

Preview with #031B4E

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

Preview Lab → · Contrast checker → · Palette generator →