#311E9E#311E9E

#311E9E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.4% C 0.190 H 277.9°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#311E9E
RGB	rgb(49, 30, 158)
HSL	hsl(249, 68%, 37%)
HSV	hsv(249, 81%, 62%)
CMYK	cmyk(69%, 81%, 0%, 38%)
CIE-LAB	lab(23.83, 46.51, -65.26)
CIE-LCH	lch(23.83, 80.14, 305.48°)
OKLab	oklab(36.41% 0.0263 -0.1885)
OKLCH	oklch(36.41% 0.19 277.9)
XYZ	xyz(7.9005, 4.0494, 32.7064)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311E9E #8B9E1E

analogous

#1E4B9E #311E9E #711E9E

triadic

#311E9E #9E311E #1E9E31

tetradic

#311E9E #9E1E4B #8B9E1E #1E9E71

square

#311E9E #9E1E4B #8B9E1E #1E9E71

split-complementary

#311E9E #9E711E #4B9E1E

monochromatic

#110A37 #21146B #311E9E #4128D1 #6B57DF

Accessibility & contrast

On white

11.60

#311E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#311E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311E9E

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311E9E	#FFFFFF	#000000	##FFFFFF
##311E9E	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA2

Deuteranopia (green-blind)

#00339C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #311e9e;
/* rgb */ color: rgb(49, 30, 158);
/* oklch */ color: oklch(36.4% 0.190 277.9);

Tailwind

colors: {
  custom: {
    50: '#7a5ebc',
    500: '#311e9e',
    950: '#000000',
  },
}

SCSS

$custom: #311e9e;
$custom-light: #7a5ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#311e9e",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 158
  },
  "hsl": {
    "h": 248.906,
    "s": 68.085,
    "l": 36.863
  },
  "oklch": {
    "l": 0.36414,
    "c": 0.19036,
    "h": 277.9
  },
  "luminance": 0.0405
}

Semantic roles & 50–950 ramp

primary

#311E9E

secondary

#B2C355

accent

#EB3DD1

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #311E9E

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

Preview Lab → · Contrast checker → · Palette generator →