#311EA9#311EA9

#311EA9 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.7% C 0.203 H 276.5°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#311EA9
RGB	rgb(49, 30, 169)
HSL	hsl(248, 70%, 39%)
HSV	hsv(248, 82%, 66%)
CMYK	cmyk(71%, 82.2%, 0%, 33.7%)
CIE-LAB	lab(25.09, 49.84, -69.86)
CIE-LCH	lch(25.09, 85.82, 305.51°)
OKLab	oklab(37.65% 0.0231 -0.2019)
OKLCH	oklch(37.65% 0.203 276.5)
XYZ	xyz(8.8900, 4.4453, 37.9179)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311EA9 #96A91E

analogous

#1E51A9 #311EA9 #771EA9

triadic

#311EA9 #A9311E #1EA931

tetradic

#311EA9 #A91E51 #96A91E #1EA977

square

#311EA9 #A91E51 #96A91E #1EA977

split-complementary

#311EA9 #A9771E #51A91E

monochromatic

#130C41 #221575 #311EA9 #432BD9 #715FE3

Accessibility & contrast

On white

11.12

#311EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#311EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311EA9

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311EA9	#FFFFFF	#000000	##FFFFFF
##311EA9	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AD

Deuteranopia (green-blind)

#0035A7

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #311ea9;
/* rgb */ color: rgb(49, 30, 169);
/* oklch */ color: oklch(37.7% 0.203 276.5);

Tailwind

colors: {
  custom: {
    50: '#7c5fc4',
    500: '#311ea9',
    950: '#000000',
  },
}

SCSS

$custom: #311ea9;
$custom-light: #7c5fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#311ea9",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 169
  },
  "hsl": {
    "h": 248.201,
    "s": 69.849,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37653,
    "c": 0.20321,
    "h": 276.5
  },
  "luminance": 0.04446
}

Semantic roles & 50–950 ramp

primary

#311EA9

secondary

#B8C75C

accent

#ED3BD4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311EA9

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

Preview Lab → · Contrast checker → · Palette generator →