#31508D#31508D

#31508D is a dark, moderate blue. Relative luminance 0.083; OKLCH L 43.9% C 0.107 H 262.5°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#31508D
RGB	rgb(49, 80, 141)
HSL	hsl(220, 48%, 37%)
HSV	hsv(220, 65%, 55%)
CMYK	cmyk(65.2%, 43.3%, 0%, 44.7%)
CIE-LAB	lab(34.63, 9.19, -37.31)
CIE-LCH	lch(34.63, 38.43, 283.83°)
OKLab	oklab(43.94% -0.014 -0.1063)
OKLCH	oklch(43.94% 0.107 262.5)
XYZ	xyz(8.9413, 8.3126, 26.3274)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31508D #8D6E31

analogous

#317E8D #31508D #40318D

triadic

#31508D #8D3150 #508D31

tetradic

#31508D #8D317E #8D6E31 #318D40

square

#31508D #8D317E #8D6E31 #318D40

split-complementary

#31508D #8D4031 #7E8D31

monochromatic

#111C32 #213660 #31508D #416ABA #6C8DCC

Accessibility & contrast

On white

7.89

#31508D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#31508D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31508D

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31508D	#FFFFFF	#000000	##FFFFFF
##31508D	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34568F

Deuteranopia (green-blind)

#264D8C

Tritanopia (blue-blind)

#005E67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #31508d;
/* rgb */ color: rgb(49, 80, 141);
/* oklch */ color: oklch(43.9% 0.107 262.5);

Tailwind

colors: {
  custom: {
    50: '#7380af',
    500: '#31508d',
    950: '#000000',
  },
}

SCSS

$custom: #31508d;
$custom-light: #7380af;
$custom-dark: #000000;

JSON

{
  "hex": "#31508d",
  "rgb": {
    "r": 49,
    "g": 80,
    "b": 141
  },
  "hsl": {
    "h": 219.783,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43941,
    "c": 0.10726,
    "h": 262.5
  },
  "luminance": 0.08313
}

Semantic roles & 50–950 ramp

primary

#31508D

secondary

#B49A66

accent

#AA50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #31508D

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

Preview Lab → · Contrast checker → · Palette generator →