#313C72#313C72

#313C72 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.093 H 272.5°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#313C72
RGB	rgb(49, 60, 114)
HSL	hsl(230, 40%, 32%)
HSV	hsv(230, 57%, 45%)
CMYK	cmyk(57%, 47.4%, 0%, 55.3%)
CIE-LAB	lab(27.02, 12.77, -32.65)
CIE-LCH	lch(27.02, 35.06, 291.36°)
OKLab	oklab(37.56% 0.0041 -0.0929)
OKLCH	oklch(37.56% 0.093 272.5)
XYZ	xyz(5.9188, 5.0992, 16.5887)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C72 #726731

analogous

#315D72 #313C72 #473172

triadic

#313C72 #72313C #3C7231

tetradic

#313C72 #72315D #726731 #317247

square

#313C72 #72315D #726731 #317247

split-complementary

#313C72 #724731 #5D7231

monochromatic

#0C0F1C #1F2547 #313C72 #43539D #6271BB

Accessibility & contrast

On white

10.40

#313C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#313C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C72

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C72	#FFFFFF	#000000	##FFFFFF
##313C72	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244374

Deuteranopia (green-blind)

#1C3D71

Tritanopia (blue-blind)

#104851

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #313c72;
/* rgb */ color: rgb(49, 60, 114);
/* oklch */ color: oklch(37.6% 0.093 272.5);

Tailwind

colors: {
  custom: {
    50: '#6f719b',
    500: '#313c72',
    950: '#000000',
  },
}

SCSS

$custom: #313c72;
$custom-light: #6f719b;
$custom-dark: #000000;

JSON

{
  "hex": "#313c72",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 114
  },
  "hsl": {
    "h": 229.846,
    "s": 39.877,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37557,
    "c": 0.09302,
    "h": 272.5
  },
  "luminance": 0.051
}

Semantic roles & 50–950 ramp

primary

#313C72

secondary

#A3975C

accent

#BB58D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313C72

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

Preview Lab → · Contrast checker → · Palette generator →