#313C8D#313C8D

#313C8D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.134 H 272.9°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#313C8D
RGB	rgb(49, 60, 141)
HSL	hsl(233, 48%, 37%)
HSV	hsv(233, 65%, 55%)
CMYK	cmyk(65.2%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(28.92, 22.62, -46.49)
CIE-LCH	lch(28.92, 51.70, 295.95°)
OKLab	oklab(39.6% 0.0067 -0.1336)
OKLCH	oklch(39.6% 0.134 272.9)
XYZ	xyz(7.6886, 5.8071, 25.9098)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C8D #8D8231

analogous

#316A8D #313C8D #54318D

triadic

#313C8D #8D313C #3C8D31

tetradic

#313C8D #8D316A #8D8231 #318D54

square

#313C8D #8D316A #8D8231 #318D54

split-complementary

#313C8D #8D5431 #6A8D31

monochromatic

#111532 #212960 #313C8D #414FBA #6C78CC

Accessibility & contrast

On white

9.72

#313C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#313C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C8D

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C8D	#FFFFFF	#000000	##FFFFFF
##313C8D	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313c8d;
/* rgb */ color: rgb(49, 60, 141);
/* oklch */ color: oklch(39.6% 0.134 272.9);

Tailwind

colors: {
  custom: {
    50: '#7471af',
    500: '#313c8d',
    950: '#000000',
  },
}

SCSS

$custom: #313c8d;
$custom-light: #7471af;
$custom-dark: #000000;

JSON

{
  "hex": "#313c8d",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 232.826,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39604,
    "c": 0.13378,
    "h": 272.9
  },
  "luminance": 0.05808
}

Semantic roles & 50–950 ramp

primary

#313C8D

secondary

#B4AA66

accent

#C850D8

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313C8D

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

Preview Lab → · Contrast checker → · Palette generator →