#313D7D#313D7D

#313D7D is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.6% C 0.109 H 272.4°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#313D7D
RGB	rgb(49, 61, 125)
HSL	hsl(231, 44%, 34%)
HSV	hsv(231, 61%, 49%)
CMYK	cmyk(60.8%, 51.2%, 0%, 51%)
CIE-LAB	lab(28.04, 16.08, -37.96)
CIE-LCH	lch(28.04, 41.23, 292.95°)
OKLab	oklab(38.57% 0.0045 -0.1085)
OKLCH	oklch(38.57% 0.109 272.4)
XYZ	xyz(6.6358, 5.4706, 20.1043)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D7D #7D7131

analogous

#31637D #313D7D #4B317D

triadic

#313D7D #7D313D #3D7D31

tetradic

#313D7D #7D3163 #7D7131 #317D4B

square

#313D7D #7D3163 #7D7131 #317D4B

split-complementary

#313D7D #7D4B31 #637D31

monochromatic

#0F1225 #202851 #313D7D #4252A9 #6674C3

Accessibility & contrast

On white

10.03

#313D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#313D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D7D

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D7D	#FFFFFF	#000000	##FFFFFF
##313D7D	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C467F

Deuteranopia (green-blind)

#0F3F7C

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313d7d;
/* rgb */ color: rgb(49, 61, 125);
/* oklch */ color: oklch(38.6% 0.109 272.4);

Tailwind

colors: {
  custom: {
    50: '#7072a3',
    500: '#313d7d',
    950: '#000000',
  },
}

SCSS

$custom: #313d7d;
$custom-light: #7072a3;
$custom-dark: #000000;

JSON

{
  "hex": "#313d7d",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 230.526,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38568,
    "c": 0.10861,
    "h": 272.4
  },
  "luminance": 0.05471
}

Semantic roles & 50–950 ramp

primary

#313D7D

secondary

#AA9E60

accent

#BF54D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313D7D

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

Preview Lab → · Contrast checker → · Palette generator →