#313AA8#313AA8

#313AA8 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.174 H 272.6°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#313AA8
RGB	rgb(49, 58, 168)
HSL	hsl(235, 55%, 43%)
HSV	hsv(235, 71%, 66%)
CMYK	cmyk(70.8%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(30.65, 33.73, -60.10)
CIE-LCH	lch(30.65, 68.91, 299.30°)
OKLab	oklab(41.58% 0.0077 -0.1736)
OKLCH	oklch(41.58% 0.174 272.6)
XYZ	xyz(9.8452, 6.5053, 37.7750)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AA8 #A89F31

analogous

#3176A8 #313AA8 #6331A8

triadic

#313AA8 #A8313A #3AA831

tetradic

#313AA8 #A83176 #A89F31 #31A863

square

#313AA8 #A83176 #A89F31 #31A863

split-complementary

#313AA8 #A86331 #76A831

monochromatic

#151949 #232A79 #313AA8 #4C55CB #7B82D8

Accessibility & contrast

On white

9.13

#313AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#313AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AA8

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AA8	#FFFFFF	#000000	##FFFFFF
##313AA8	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313aa8;
/* rgb */ color: rgb(49, 58, 168);
/* oklch */ color: oklch(41.6% 0.174 272.6);

Tailwind

colors: {
  custom: {
    50: '#7a70c3',
    500: '#313aa8',
    950: '#000000',
  },
}

SCSS

$custom: #313aa8;
$custom-light: #7a70c3;
$custom-dark: #000000;

JSON

{
  "hex": "#313aa8",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 235.462,
    "s": 54.839,
    "l": 42.549
  },
  "oklch": {
    "l": 0.41583,
    "c": 0.17376,
    "h": 272.6
  },
  "luminance": 0.06506
}

Semantic roles & 50–950 ramp

primary

#313AA8

secondary

#C1BB74

accent

#D34ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #313AA8

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

Preview Lab → · Contrast checker → · Palette generator →