#31479D#31479D

#31479D is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.1% C 0.142 H 268.9°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#31479D
RGB	rgb(49, 71, 157)
HSL	hsl(228, 52%, 40%)
HSV	hsv(228, 69%, 62%)
CMYK	cmyk(68.8%, 54.8%, 0%, 38.4%)
CIE-LAB	lab(33.12, 21.16, -49.45)
CIE-LCH	lch(33.12, 53.79, 293.16°)
OKLab	oklab(43.14% -0.0028 -0.1422)
OKLCH	oklch(43.14% 0.142 268.9)
XYZ	xyz(9.6036, 7.5928, 32.8512)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31479D #9D8731

analogous

#317D9D #31479D #51319D

triadic

#31479D #9D3147 #479D31

tetradic

#31479D #9D317D #9D8731 #319D51

square

#31479D #9D317D #9D8731 #319D51

split-complementary

#31479D #9D5131 #7D9D31

monochromatic

#141D40 #22326E #31479D #4660C5 #7588D4

Accessibility & contrast

On white

8.34

#31479D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#31479D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31479D

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31479D	#FFFFFF	#000000	##FFFFFF
##31479D	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0653A0

Deuteranopia (green-blind)

#00499B

Tritanopia (blue-blind)

#005C6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #31479d;
/* rgb */ color: rgb(49, 71, 157);
/* oklch */ color: oklch(43.1% 0.142 268.9);

Tailwind

colors: {
  custom: {
    50: '#7679bb',
    500: '#31479d',
    950: '#000000',
  },
}

SCSS

$custom: #31479d;
$custom-light: #7679bb;
$custom-dark: #000000;

JSON

{
  "hex": "#31479d",
  "rgb": {
    "r": 49,
    "g": 71,
    "b": 157
  },
  "hsl": {
    "h": 227.778,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.43136,
    "c": 0.14221,
    "h": 268.9
  },
  "luminance": 0.07594
}

Semantic roles & 50–950 ramp

primary

#31479D

secondary

#BCAC6E

accent

#BF4CDC

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #31479D

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

Preview Lab → · Contrast checker → · Palette generator →