#311F98#311F98

#311F98 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.9% C 0.182 H 278.7°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#311F98
RGB	rgb(49, 31, 152)
HSL	hsl(249, 66%, 36%)
HSV	hsv(249, 80%, 60%)
CMYK	cmyk(67.8%, 79.6%, 0%, 40.4%)
CIE-LAB	lab(23.34, 44.17, -62.41)
CIE-LCH	lch(23.34, 76.46, 305.29°)
OKLab	oklab(35.87% 0.0275 -0.1803)
OKLCH	oklch(35.87% 0.182 278.7)
XYZ	xyz(7.4223, 3.8993, 30.0612)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F98 #86981F

analogous

#1F4998 #311F98 #6D1F98

triadic

#311F98 #98311F #1F9831

tetradic

#311F98 #981F49 #86981F #1F986D

square

#311F98 #981F49 #86981F #1F986D

split-complementary

#311F98 #986D1F #49981F

monochromatic

#100A32 #211565 #311F98 #4129CB #6955DC

Accessibility & contrast

On white

11.80

#311F98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#311F98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F98

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F98	#FFFFFF	#000000	##FFFFFF
##311F98	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9B

Deuteranopia (green-blind)

#003396

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #311f98;
/* rgb */ color: rgb(49, 31, 152);
/* oklch */ color: oklch(35.9% 0.182 278.7);

Tailwind

colors: {
  custom: {
    50: '#795eb8',
    500: '#311f98',
    950: '#000000',
  },
}

SCSS

$custom: #311f98;
$custom-light: #795eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#311f98",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 152
  },
  "hsl": {
    "h": 248.926,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3587,
    "c": 0.18234,
    "h": 278.7
  },
  "luminance": 0.039
}

Semantic roles & 50–950 ramp

primary

#311F98

secondary

#B0C053

accent

#E93FD0

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0511

muted

#7C7980

Preview Lab

Preview with #311F98

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

Preview Lab → · Contrast checker → · Palette generator →