#313BA3#313BA3

#313BA3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.3% C 0.166 H 272.5°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#313BA3
RGB	rgb(49, 59, 163)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 64%)
CMYK	cmyk(69.9%, 63.8%, 0%, 36.1%)
CIE-LAB	lab(30.46, 31.29, -57.40)
CIE-LCH	lch(30.46, 65.38, 298.60°)
OKLab	oklab(41.31% 0.0073 -0.1657)
OKLCH	oklch(41.31% 0.166 272.5)
XYZ	xyz(9.4392, 6.4243, 35.3858)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA3 #A39931

analogous

#3174A3 #313BA3 #6031A3

triadic

#313BA3 #A3313B #3BA331

tetradic

#313BA3 #A33174 #A39931 #31A360

square

#313BA3 #A33174 #A39931 #31A360

split-complementary

#313BA3 #A36031 #74A331

monochromatic

#151945 #232A74 #313BA3 #4954C8 #7880D6

Accessibility & contrast

On white

9.19

#313BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#313BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA3

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA3	#FFFFFF	#000000	##FFFFFF
##313BA3	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0043A1

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ba3;
/* rgb */ color: rgb(49, 59, 163);
/* oklch */ color: oklch(41.3% 0.166 272.5);

Tailwind

colors: {
  custom: {
    50: '#7971bf',
    500: '#313ba3',
    950: '#000000',
  },
}

SCSS

$custom: #313ba3;
$custom-light: #7971bf;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba3",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 163
  },
  "hsl": {
    "h": 234.737,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41306,
    "c": 0.16585,
    "h": 272.5
  },
  "luminance": 0.06425
}

Semantic roles & 50–950 ramp

primary

#313BA3

secondary

#BFB871

accent

#D04BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA3

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

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