#313D85#313D85

#313D85 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.121 H 272.5°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#313D85
RGB	rgb(49, 61, 133)
HSL	hsl(231, 46%, 36%)
HSV	hsv(231, 63%, 52%)
CMYK	cmyk(63.2%, 54.1%, 0%, 47.8%)
CIE-LAB	lab(28.60, 19.01, -42.05)
CIE-LCH	lch(28.60, 46.15, 294.32°)
OKLab	oklab(39.17% 0.0053 -0.1205)
OKLCH	oklch(39.17% 0.121 272.5)
XYZ	xyz(7.1676, 5.6833, 22.9050)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D85 #857931

analogous

#316785 #313D85 #4F3185

triadic

#313D85 #85313D #3D8531

tetradic

#313D85 #853167 #857931 #31854F

square

#313D85 #853167 #857931 #31854F

split-complementary

#313D85 #854F31 #678531

monochromatic

#10142C #212858 #313D85 #4152B2 #6976C8

Accessibility & contrast

On white

9.83

#313D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#313D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D85

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D85	#FFFFFF	#000000	##FFFFFF
##313D85	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114788

Deuteranopia (green-blind)

#004084

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313d85;
/* rgb */ color: rgb(49, 61, 133);
/* oklch */ color: oklch(39.2% 0.121 272.5);

Tailwind

colors: {
  custom: {
    50: '#7272a9',
    500: '#313d85',
    950: '#000000',
  },
}

SCSS

$custom: #313d85;
$custom-light: #7272a9;
$custom-dark: #000000;

JSON

{
  "hex": "#313d85",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 133
  },
  "hsl": {
    "h": 231.429,
    "s": 46.154,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39174,
    "c": 0.12065,
    "h": 272.5
  },
  "luminance": 0.05684
}

Semantic roles & 50–950 ramp

primary

#313D85

secondary

#AFA463

accent

#C352D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #313D85

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

Preview Lab → · Contrast checker → · Palette generator →