#311DAC#311DAC

#311DAC is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.9% C 0.207 H 276.2°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#311DAC
RGB	rgb(49, 29, 172)
HSL	hsl(248, 71%, 39%)
HSV	hsv(248, 83%, 67%)
CMYK	cmyk(71.5%, 83.1%, 0%, 32.5%)
CIE-LAB	lab(25.29, 51.19, -71.34)
CIE-LCH	lch(25.29, 87.81, 305.66°)
OKLab	oklab(37.89% 0.0225 -0.2062)
OKLCH	oklch(37.89% 0.207 276.2)
XYZ	xyz(9.1499, 4.5094, 39.4099)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311DAC #98AC1D

analogous

#1D50AC #311DAC #791DAC

triadic

#311DAC #AC311D #1DAC31

tetradic

#311DAC #AC1D50 #98AC1D #1DAC79

square

#311DAC #AC1D50 #98AC1D #1DAC79

split-complementary

#311DAC #AC791D #50AC1D

monochromatic

#130B43 #221478 #311DAC #442BDB #725FE4

Accessibility & contrast

On white

11.04

#311DAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#311DAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311DAC

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311DAC	#FFFFFF	#000000	##FFFFFF
##311DAC	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B0

Deuteranopia (green-blind)

#0036AA

Tritanopia (blue-blind)

#004B66

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #311dac;
/* rgb */ color: rgb(49, 29, 172);
/* oklch */ color: oklch(37.9% 0.207 276.2);

Tailwind

colors: {
  custom: {
    50: '#7d5fc6',
    500: '#311dac',
    950: '#000000',
  },
}

SCSS

$custom: #311dac;
$custom-light: #7d5fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#311dac",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 172
  },
  "hsl": {
    "h": 248.392,
    "s": 71.144,
    "l": 39.412
  },
  "oklch": {
    "l": 0.3789,
    "c": 0.20742,
    "h": 276.2
  },
  "luminance": 0.0451
}

Semantic roles & 50–950 ramp

primary

#311DAC

secondary

#B9C85C

accent

#EE3AD5

background

#F8F5FC

surface

#F0E9F8

border

#CBC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311DAC

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

Preview Lab → · Contrast checker → · Palette generator →