#313BA4#313BA4

#313BA4 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.167 H 272.5°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#313BA4
RGB	rgb(49, 59, 164)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 64%)
CMYK	cmyk(70.1%, 64%, 0%, 35.7%)
CIE-LAB	lab(30.55, 31.65, -57.87)
CIE-LCH	lch(30.55, 65.96, 298.68°)
OKLab	oklab(41.4% 0.0073 -0.167)
OKLCH	oklch(41.4% 0.167 272.5)
XYZ	xyz(9.5292, 6.4603, 35.8595)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA4 #A49A31

analogous

#3175A4 #313BA4 #6131A4

triadic

#313BA4 #A4313B #3BA431

tetradic

#313BA4 #A43175 #A49A31 #31A461

square

#313BA4 #A43175 #A49A31 #31A461

split-complementary

#313BA4 #A46131 #75A431

monochromatic

#151946 #232A75 #313BA4 #4955C9 #7981D7

Accessibility & contrast

On white

9.16

#313BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#313BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA4

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA4	#FFFFFF	#000000	##FFFFFF
##313BA4	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ba4;
/* rgb */ color: rgb(49, 59, 164);
/* oklch */ color: oklch(41.4% 0.167 272.5);

Tailwind

colors: {
  custom: {
    50: '#7971c0',
    500: '#313ba4',
    950: '#000000',
  },
}

SCSS

$custom: #313ba4;
$custom-light: #7971c0;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba4",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 164
  },
  "hsl": {
    "h": 234.783,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41396,
    "c": 0.1672,
    "h": 272.5
  },
  "luminance": 0.06461
}

Semantic roles & 50–950 ramp

primary

#313BA4

secondary

#BFB872

accent

#D14ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA4

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

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