#31579C#31579C

#31579C is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.5% C 0.120 H 261.3°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#31579C
RGB	rgb(49, 87, 156)
HSL	hsl(219, 52%, 40%)
HSV	hsv(219, 69%, 61%)
CMYK	cmyk(68.6%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(37.61, 10.17, -41.63)
CIE-LCH	lch(37.61, 42.86, 283.72°)
OKLab	oklab(46.54% -0.0182 -0.1189)
OKLCH	oklch(46.54% 0.12 261.3)
XYZ	xyz(10.6734, 9.8686, 32.7884)
Luminance	0.0987 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31579C #9C7631

analogous

#318C9C #31579C #41319C

triadic

#31579C #9C3157 #579C31

tetradic

#31579C #9C318C #9C7631 #319C41

square

#31579C #9C318C #9C7631 #319C41

split-complementary

#31579C #9C4131 #8C9C31

monochromatic

#14233F #223D6D #31579C #4573C5 #7496D3

Accessibility & contrast

On white

7.06

#31579C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#31579C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31579C

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31579C	#FFFFFF	#000000	##FFFFFF
##31579C	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365E9F

Deuteranopia (green-blind)

#24549B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #31579c;
/* rgb */ color: rgb(49, 87, 156);
/* oklch */ color: oklch(46.5% 0.120 261.3);

Tailwind

colors: {
  custom: {
    50: '#7585ba',
    500: '#31579c',
    950: '#000000',
  },
}

SCSS

$custom: #31579c;
$custom-light: #7585ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31579c",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 218.692,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.46536,
    "c": 0.12032,
    "h": 261.3
  },
  "luminance": 0.0987
}

Semantic roles & 50–950 ramp

primary

#31579C

secondary

#BBA06D

accent

#A94CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #31579C

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

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