#31319D#31319D

#31319D is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.0% C 0.170 H 275.1°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#31319D
RGB	rgb(49, 49, 157)
HSL	hsl(240, 52%, 40%)
HSV	hsv(240, 69%, 62%)
CMYK	cmyk(68.8%, 68.8%, 0%, 38.4%)
CIE-LAB	lab(27.53, 35.53, -58.57)
CIE-LCH	lch(27.53, 68.50, 301.24°)
OKLab	oklab(39% 0.0152 -0.1691)
OKLCH	oklch(39% 0.17 275.1)
XYZ	xyz(8.4487, 5.2831, 32.4663)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31319D #9D9D31

analogous

#31679D #31319D #67319D

triadic

#31319D #9D3131 #319D31

tetradic

#31319D #9D3167 #9D9D31 #319D67

square

#31319D #9D3167 #9D9D31 #319D67

split-complementary

#31319D #9D6731 #679D31

monochromatic

#141440 #22226E #31319D #4646C5 #7575D4

Accessibility & contrast

On white

10.21

#31319D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#31319D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31319D

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31319D	#FFFFFF	#000000	##FFFFFF
##31319D	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A0

Deuteranopia (green-blind)

#003C9B

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31319d;
/* rgb */ color: rgb(49, 49, 157);
/* oklch */ color: oklch(39.0% 0.170 275.1);

Tailwind

colors: {
  custom: {
    50: '#786abb',
    500: '#31319d',
    950: '#000000',
  },
}

SCSS

$custom: #31319d;
$custom-light: #786abb;
$custom-dark: #000000;

JSON

{
  "hex": "#31319d",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 157
  },
  "hsl": {
    "h": 240,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39002,
    "c": 0.16983,
    "h": 275.1
  },
  "luminance": 0.05284
}

Semantic roles & 50–950 ramp

primary

#31319D

secondary

#BCBC6E

accent

#DC4CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31319D

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

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