#313D87#313D87

#313D87 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.124 H 272.5°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#313D87
RGB	rgb(49, 61, 135)
HSL	hsl(232, 47%, 36%)
HSV	hsv(232, 64%, 53%)
CMYK	cmyk(63.7%, 54.8%, 0%, 47.1%)
CIE-LAB	lab(28.74, 19.74, -43.06)
CIE-LCH	lch(28.74, 47.37, 294.63°)
OKLab	oklab(39.33% 0.0054 -0.1235)
OKLCH	oklch(39.33% 0.124 272.5)
XYZ	xyz(7.3071, 5.7391, 23.6397)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D87 #877B31

analogous

#316887 #313D87 #503187

triadic

#313D87 #87313D #3D8731

tetradic

#313D87 #873168 #877B31 #318750

square

#313D87 #873168 #877B31 #318750

split-complementary

#313D87 #875031 #688731

monochromatic

#10142D #21295A #313D87 #4151B4 #6A77C9

Accessibility & contrast

On white

9.78

#313D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#313D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D87

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D87	#FFFFFF	#000000	##FFFFFF
##313D87	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D488A

Deuteranopia (green-blind)

#004085

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313d87;
/* rgb */ color: rgb(49, 61, 135);
/* oklch */ color: oklch(39.3% 0.124 272.5);

Tailwind

colors: {
  custom: {
    50: '#7272aa',
    500: '#313d87',
    950: '#000000',
  },
}

SCSS

$custom: #313d87;
$custom-light: #7272aa;
$custom-dark: #000000;

JSON

{
  "hex": "#313d87",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 135
  },
  "hsl": {
    "h": 231.628,
    "s": 46.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39329,
    "c": 0.12363,
    "h": 272.5
  },
  "luminance": 0.0574
}

Semantic roles & 50–950 ramp

primary

#313D87

secondary

#B0A664

accent

#C451D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313D87

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

Preview Lab → · Contrast checker → · Palette generator →