#313FA7#313FA7

#313FA7 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.166 H 271.4°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#313FA7
RGB	rgb(49, 63, 167)
HSL	hsl(233, 55%, 42%)
HSV	hsv(233, 71%, 65%)
CMYK	cmyk(70.7%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(31.80, 30.14, -57.62)
CIE-LCH	lch(31.80, 65.03, 297.61°)
OKLab	oklab(42.4% 0.0041 -0.1663)
OKLCH	oklch(42.4% 0.166 271.4)
XYZ	xyz(10.0168, 6.9970, 37.3744)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313FA7 #A79931

analogous

#317AA7 #313FA7 #5E31A7

triadic

#313FA7 #A7313F #3FA731

tetradic

#313FA7 #A7317A #A79931 #31A75E

square

#313FA7 #A7317A #A79931 #31A75E

split-complementary

#313FA7 #A75E31 #7AA731

monochromatic

#151B48 #232D78 #313FA7 #4B5ACA #7A85D8

Accessibility & contrast

On white

8.75

#313FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#313FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313FA7

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313FA7	#FFFFFF	#000000	##FFFFFF
##313FA7	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313fa7;
/* rgb */ color: rgb(49, 63, 167);
/* oklch */ color: oklch(42.4% 0.166 271.4);

Tailwind

colors: {
  custom: {
    50: '#7974c2',
    500: '#313fa7',
    950: '#000000',
  },
}

SCSS

$custom: #313fa7;
$custom-light: #7974c2;
$custom-dark: #000000;

JSON

{
  "hex": "#313fa7",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 232.881,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42399,
    "c": 0.16634,
    "h": 271.4
  },
  "luminance": 0.06998
}

Semantic roles & 50–950 ramp

primary

#313FA7

secondary

#C1B773

accent

#CC4ADE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313FA7

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

Preview Lab → · Contrast checker → · Palette generator →