#31579D#31579D

#31579D is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.6% C 0.122 H 261.5°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#31579D
RGB	rgb(49, 87, 157)
HSL	hsl(219, 52%, 40%)
HSV	hsv(219, 69%, 62%)
CMYK	cmyk(68.8%, 44.6%, 0%, 38.4%)
CIE-LAB	lab(37.67, 10.54, -42.13)
CIE-LCH	lch(37.67, 43.43, 284.05°)
OKLab	oklab(46.6% -0.018 -0.1204)
OKLCH	oklch(46.6% 0.122 261.5)
XYZ	xyz(10.7585, 9.9026, 33.2362)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31579D #9D7731

analogous

#318D9D #31579D #41319D

triadic

#31579D #9D3157 #579D31

tetradic

#31579D #9D318D #9D7731 #319D41

square

#31579D #9D318D #9D7731 #319D41

split-complementary

#31579D #9D4131 #8D9D31

monochromatic

#142340 #223D6E #31579D #4673C5 #7596D4

Accessibility & contrast

On white

7.05

#31579D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#31579D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31579D

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31579D	#FFFFFF	#000000	##FFFFFF
##31579D	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355EA0

Deuteranopia (green-blind)

#23549C

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #31579d;
/* rgb */ color: rgb(49, 87, 157);
/* oklch */ color: oklch(46.6% 0.122 261.5);

Tailwind

colors: {
  custom: {
    50: '#7685ba',
    500: '#31579d',
    950: '#000000',
  },
}

SCSS

$custom: #31579d;
$custom-light: #7685ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31579d",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 157
  },
  "hsl": {
    "h": 218.889,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.46603,
    "c": 0.12175,
    "h": 261.5
  },
  "luminance": 0.09904
}

Semantic roles & 50–950 ramp

primary

#31579D

secondary

#BCA06E

accent

#A94CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #31579D

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

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