#311DA7#311DA7

#311DA7 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.3% C 0.202 H 276.8°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#311DA7
RGB	rgb(49, 29, 167)
HSL	hsl(249, 70%, 38%)
HSV	hsv(249, 83%, 65%)
CMYK	cmyk(70.7%, 82.6%, 0%, 34.5%)
CIE-LAB	lab(24.71, 49.70, -69.29)
CIE-LCH	lch(24.71, 85.27, 305.65°)
OKLab	oklab(37.32% 0.024 -0.2002)
OKLCH	oklch(37.32% 0.202 276.8)
XYZ	xyz(8.6788, 4.3209, 36.9284)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311DA7 #93A71D

analogous

#1D4EA7 #311DA7 #761DA7

triadic

#311DA7 #A7311D #1DA731

tetradic

#311DA7 #A71D4E #93A71D #1DA776

square

#311DA7 #A71D4E #93A71D #1DA776

split-complementary

#311DA7 #A7761D #4EA71D

monochromatic

#120B3F #221473 #311DA7 #4128DA #6F5CE3

Accessibility & contrast

On white

11.26

#311DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#311DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311DA7

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311DA7	#FFFFFF	#000000	##FFFFFF
##311DA7	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AB

Deuteranopia (green-blind)

#0035A5

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311da7;
/* rgb */ color: rgb(49, 29, 167);
/* oklch */ color: oklch(37.3% 0.202 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c5ec3',
    500: '#311da7',
    950: '#000000',
  },
}

SCSS

$custom: #311da7;
$custom-light: #7c5ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#311da7",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 167
  },
  "hsl": {
    "h": 248.696,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.37319,
    "c": 0.20168,
    "h": 276.8
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary

#311DA7

secondary

#B7C759

accent

#ED3BD3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311DA7

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

Preview Lab → · Contrast checker → · Palette generator →