#31579E#31579E

#31579E is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.7% C 0.123 H 261.7°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#31579E
RGB	rgb(49, 87, 158)
HSL	hsl(219, 53%, 41%)
HSV	hsv(219, 69%, 62%)
CMYK	cmyk(69%, 44.9%, 0%, 38%)
CIE-LAB	lab(37.73, 10.92, -42.63)
CIE-LCH	lch(37.73, 44.01, 284.36°)
OKLab	oklab(46.67% -0.0179 -0.1219)
OKLCH	oklch(46.67% 0.123 261.7)
XYZ	xyz(10.8442, 9.9369, 33.6876)
Luminance	0.0994 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31579E #9E7831

analogous

#318D9E #31579E #42319E

triadic

#31579E #9E3157 #579E31

tetradic

#31579E #9E318D #9E7831 #319E42

square

#31579E #9E318D #9E7831 #319E42

split-complementary

#31579E #9E4231 #8D9E31

monochromatic

#142441 #233D6F #31579E #4673C6 #7596D4

Accessibility & contrast

On white

7.03

#31579E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#31579E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31579E

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31579E	#FFFFFF	#000000	##FFFFFF
##31579E	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA1

Deuteranopia (green-blind)

#21549D

Tritanopia (blue-blind)

#006773

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #31579e;
/* rgb */ color: rgb(49, 87, 158);
/* oklch */ color: oklch(46.7% 0.123 261.7);

Tailwind

colors: {
  custom: {
    50: '#7685bb',
    500: '#31579e',
    950: '#000000',
  },
}

SCSS

$custom: #31579e;
$custom-light: #7685bb;
$custom-dark: #000000;

JSON

{
  "hex": "#31579e",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 158
  },
  "hsl": {
    "h": 219.083,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.46671,
    "c": 0.12317,
    "h": 261.7
  },
  "luminance": 0.09938
}

Semantic roles & 50–950 ramp

primary

#31579E

secondary

#BCA16E

accent

#AA4CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #31579E

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

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