#31278B#31278B

#31278B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.6% C 0.158 H 279.2°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#31278B
RGB	rgb(49, 39, 139)
HSL	hsl(246, 56%, 35%)
HSV	hsv(246, 72%, 55%)
CMYK	cmyk(64.7%, 71.9%, 0%, 45.5%)
CIE-LAB	lab(23.56, 35.50, -53.99)
CIE-LCH	lch(23.56, 64.62, 303.33°)
OKLab	oklab(35.63% 0.0253 -0.1557)
OKLCH	oklch(35.63% 0.158 279.2)
XYZ	xyz(6.6509, 3.9676, 24.8364)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31278B #818B27

analogous

#274F8B #31278B #63278B

triadic

#31278B #8B3127 #278B31

tetradic

#31278B #8B274F #818B27 #278B63

square

#31278B #8B274F #818B27 #278B63

split-complementary

#31278B #8B6327 #4F8B27

monochromatic

#0F0C2B #201A5B #31278B #4234BB #675BD1

Accessibility & contrast

On white

11.71

#31278B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#31278B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31278B

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31278B	#FFFFFF	#000000	##FFFFFF
##31278B	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #31278b;
/* rgb */ color: rgb(49, 39, 139);
/* oklch */ color: oklch(35.6% 0.158 279.2);

Tailwind

colors: {
  custom: {
    50: '#7562ae',
    500: '#31278b',
    950: '#000000',
  },
}

SCSS

$custom: #31278b;
$custom-light: #7562ae;
$custom-dark: #000000;

JSON

{
  "hex": "#31278b",
  "rgb": {
    "r": 49,
    "g": 39,
    "b": 139
  },
  "hsl": {
    "h": 246,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35627,
    "c": 0.15777,
    "h": 279.2
  },
  "luminance": 0.03968
}

Semantic roles & 50–950 ramp

primary

#31278B

secondary

#ADB658

accent

#DF48D0

background

#F7F5FA

surface

#EEEAF4

border

#C9C6CE

text

#090510

muted

#7B797F

Preview Lab

Preview with #31278B

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

Preview Lab → · Contrast checker → · Palette generator →