#313D8D#313D8D

#313D8D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.132 H 272.5°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#313D8D
RGB	rgb(49, 61, 141)
HSL	hsl(232, 48%, 37%)
HSV	hsv(232, 65%, 55%)
CMYK	cmyk(65.2%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(29.19, 21.95, -46.05)
CIE-LCH	lch(29.19, 51.01, 295.48°)
OKLab	oklab(39.81% 0.0057 -0.1323)
OKLCH	oklch(39.81% 0.132 272.5)
XYZ	xyz(7.7415, 5.9129, 25.9275)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D8D #8D8131

analogous

#316B8D #313D8D #53318D

triadic

#313D8D #8D313D #3D8D31

tetradic

#313D8D #8D316B #8D8131 #318D53

square

#313D8D #8D316B #8D8131 #318D53

split-complementary

#313D8D #8D5331 #6B8D31

monochromatic

#111632 #212960 #313D8D #4151BA #6C79CC

Accessibility & contrast

On white

9.62

#313D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#313D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D8D

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D8D	#FFFFFF	#000000	##FFFFFF
##313D8D	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313d8d;
/* rgb */ color: rgb(49, 61, 141);
/* oklch */ color: oklch(39.8% 0.132 272.5);

Tailwind

colors: {
  custom: {
    50: '#7472af',
    500: '#313d8d',
    950: '#000000',
  },
}

SCSS

$custom: #313d8d;
$custom-light: #7472af;
$custom-dark: #000000;

JSON

{
  "hex": "#313d8d",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 232.174,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39807,
    "c": 0.13242,
    "h": 272.5
  },
  "luminance": 0.05914
}

Semantic roles & 50–950 ramp

primary

#313D8D

secondary

#B4A966

accent

#C650D8

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313D8D

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

Preview Lab → · Contrast checker → · Palette generator →