#31339B#31339B

#31339B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.165 H 274.9°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#31339B
RGB	rgb(49, 51, 155)
HSL	hsl(239, 52%, 40%)
HSV	hsv(239, 68%, 61%)
CMYK	cmyk(68.4%, 67.1%, 0%, 39.2%)
CIE-LAB	lab(27.81, 33.58, -56.89)
CIE-LCH	lch(27.81, 66.06, 300.55°)
OKLab	oklab(39.15% 0.014 -0.1642)
OKLCH	oklch(39.15% 0.165 274.9)
XYZ	xyz(8.3649, 5.3864, 31.6029)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31339B #9B9931

analogous

#31689B #31339B #64319B

triadic

#31339B #9B3133 #339B31

tetradic

#31339B #9B3168 #9B9931 #319B64

square

#31339B #9B3168 #9B9931 #319B64

split-complementary

#31339B #9B6431 #689B31

monochromatic

#14143E #22246D #31339B #4547C4 #7375D3

Accessibility & contrast

On white

10.11

#31339B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#31339B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31339B

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31339B	#FFFFFF	#000000	##FFFFFF
##31339B	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469E

Deuteranopia (green-blind)

#003D99

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31339b;
/* rgb */ color: rgb(49, 51, 155);
/* oklch */ color: oklch(39.1% 0.165 274.9);

Tailwind

colors: {
  custom: {
    50: '#776bb9',
    500: '#31339b',
    950: '#000000',
  },
}

SCSS

$custom: #31339b;
$custom-light: #776bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#31339b",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 155
  },
  "hsl": {
    "h": 238.868,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.3915,
    "c": 0.16481,
    "h": 274.9
  },
  "luminance": 0.05387
}

Semantic roles & 50–950 ramp

primary

#31339B

secondary

#BBB96D

accent

#D94CDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31339B

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

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