#31579F#31579F

#31579F is a mid, vivid blue. Relative luminance 0.100; OKLCH L 46.7% C 0.125 H 261.8°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#31579F
RGB	rgb(49, 87, 159)
HSL	hsl(219, 53%, 41%)
HSV	hsv(219, 69%, 62%)
CMYK	cmyk(69.2%, 45.3%, 0%, 37.6%)
CIE-LAB	lab(37.79, 11.29, -43.13)
CIE-LCH	lch(37.79, 44.59, 284.67°)
OKLab	oklab(46.74% -0.0177 -0.1233)
OKLCH	oklch(46.74% 0.125 261.8)
XYZ	xyz(10.9306, 9.9715, 34.1428)
Luminance	0.0997 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31579F #9F7931

analogous

#318E9F #31579F #42319F

triadic

#31579F #9F3157 #579F31

tetradic

#31579F #9F318E #9F7931 #319F42

square

#31579F #9F318E #9F7931 #319F42

split-complementary

#31579F #9F4231 #8E9F31

monochromatic

#142441 #233D70 #31579F #4773C6 #7697D5

Accessibility & contrast

On white

7.01

#31579F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#31579F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31579F

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31579F	#FFFFFF	#000000	##FFFFFF
##31579F	1.00	7.01	2.99	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345EA2

Deuteranopia (green-blind)

#20549E

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #31579f;
/* rgb */ color: rgb(49, 87, 159);
/* oklch */ color: oklch(46.7% 0.125 261.8);

Tailwind

colors: {
  custom: {
    50: '#7685bc',
    500: '#31579f',
    950: '#000000',
  },
}

SCSS

$custom: #31579f;
$custom-light: #7685bc;
$custom-dark: #000000;

JSON

{
  "hex": "#31579f",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 159
  },
  "hsl": {
    "h": 219.273,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.46739,
    "c": 0.1246,
    "h": 261.8
  },
  "luminance": 0.09973
}

Semantic roles & 50–950 ramp

primary

#31579F

secondary

#BDA26F

accent

#AA4CDC

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #31579F

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

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