#31319A#31319A

#31319A is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.7% C 0.166 H 275.4°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#31319A
RGB	rgb(49, 49, 154)
HSL	hsl(240, 52%, 40%)
HSV	hsv(240, 68%, 60%)
CMYK	cmyk(68.2%, 68.2%, 0%, 39.6%)
CIE-LAB	lab(27.25, 34.49, -57.20)
CIE-LCH	lch(27.25, 66.79, 301.09°)
OKLab	oklab(38.71% 0.0156 -0.1651)
OKLCH	oklch(38.71% 0.166 275.4)
XYZ	xyz(8.1958, 5.1820, 31.1339)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31319A #9A9A31

analogous

#31669A #31319A #66319A

triadic

#31319A #9A3131 #319A31

tetradic

#31319A #9A3166 #9A9A31 #319A66

square

#31319A #9A3166 #9A9A31 #319A66

split-complementary

#31319A #9A6631 #669A31

monochromatic

#13133D #22226C #31319A #4545C4 #7373D2

Accessibility & contrast

On white

10.31

#31319A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#31319A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31319A

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31319A	#FFFFFF	#000000	##FFFFFF
##31319A	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459D

Deuteranopia (green-blind)

#003C98

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31319a;
/* rgb */ color: rgb(49, 49, 154);
/* oklch */ color: oklch(38.7% 0.166 275.4);

Tailwind

colors: {
  custom: {
    50: '#776ab9',
    500: '#31319a',
    950: '#000000',
  },
}

SCSS

$custom: #31319a;
$custom-light: #776ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#31319a",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 154
  },
  "hsl": {
    "h": 240,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38714,
    "c": 0.16586,
    "h": 275.4
  },
  "luminance": 0.05183
}

Semantic roles & 50–950 ramp

primary

#31319A

secondary

#BABA6C

accent

#DB4DDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31319A

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

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