#311D98#311D98

#311D98 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.6% C 0.184 H 278.9°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#311D98
RGB	rgb(49, 29, 152)
HSL	hsl(250, 68%, 35%)
HSV	hsv(250, 81%, 60%)
CMYK	cmyk(67.8%, 80.9%, 0%, 40.4%)
CIE-LAB	lab(22.99, 45.16, -62.98)
CIE-LCH	lch(22.99, 77.49, 305.64°)
OKLab	oklab(35.63% 0.0285 -0.1819)
OKLCH	oklch(35.63% 0.184 278.9)
XYZ	xyz(7.3717, 3.7981, 30.0443)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D98 #84981D

analogous

#1D4698 #311D98 #6E1D98

triadic

#311D98 #98311D #1D9831

tetradic

#311D98 #981D46 #84981D #1D986E

square

#311D98 #981D46 #84981D #1D986E

split-complementary

#311D98 #986E1D #46981D

monochromatic

#100931 #201365 #311D98 #4227CB #6852DE

Accessibility & contrast

On white

11.93

#311D98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#311D98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D98

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D98	#FFFFFF	#000000	##FFFFFF
##311D98	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9B

Deuteranopia (green-blind)

#003296

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #311d98;
/* rgb */ color: rgb(49, 29, 152);
/* oklch */ color: oklch(35.6% 0.184 278.9);

Tailwind

colors: {
  custom: {
    50: '#795db8',
    500: '#311d98',
    950: '#000000',
  },
}

SCSS

$custom: #311d98;
$custom-light: #795db8;
$custom-dark: #000000;

JSON

{
  "hex": "#311d98",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 152
  },
  "hsl": {
    "h": 249.756,
    "s": 67.956,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35631,
    "c": 0.1841,
    "h": 278.9
  },
  "luminance": 0.03799
}

Semantic roles & 50–950 ramp

primary

#311D98

secondary

#AEC150

accent

#EB3DCF

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D98

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

Preview Lab → · Contrast checker → · Palette generator →