#311CD2#311CD2

#311CD2 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 42.3% C 0.250 H 272.7°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#311CD2
RGB	rgb(49, 28, 210)
HSL	hsl(247, 76%, 47%)
HSV	hsv(247, 87%, 82%)
CMYK	cmyk(76.7%, 86.7%, 0%, 17.6%)
CIE-LAB	lab(29.75, 62.45, -86.39)
CIE-LCH	lch(29.75, 106.60, 305.86°)
OKLab	oklab(42.26% 0.0118 -0.2497)
OKLCH	oklch(42.26% 0.25 272.7)
XYZ	xyz(13.3109, 6.1352, 61.4430)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311CD2 #BDD21C

analogous

#1C62D2 #311CD2 #8C1CD2

triadic

#311CD2 #D2311C #1CD231

tetradic

#311CD2 #D21C62 #BDD21C #1CD28C

square

#311CD2 #D21C62 #BDD21C #1CD28C

split-complementary

#311CD2 #D28C1C #62D21C

monochromatic

#180E66 #24159C #311CD2 #5845E6 #887BED

Accessibility & contrast

On white

9.43

#311CD2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#311CD2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311CD2

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311CD2	#FFFFFF	#000000	##FFFFFF
##311CD2	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ED7

Deuteranopia (green-blind)

#003DCF

Tritanopia (blue-blind)

#005B7D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #311cd2;
/* rgb */ color: rgb(49, 28, 210);
/* oklch */ color: oklch(42.3% 0.250 272.7);

Tailwind

colors: {
  custom: {
    50: '#8661e2',
    500: '#311cd2',
    950: '#000000',
  },
}

SCSS

$custom: #311cd2;
$custom-light: #8661e2;
$custom-dark: #000000;

JSON

{
  "hex": "#311cd2",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 210
  },
  "hsl": {
    "h": 246.923,
    "s": 76.471,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4226,
    "c": 0.25003,
    "h": 272.7
  },
  "luminance": 0.06137
}

Semantic roles & 50–950 ramp

primary

#311CD2

secondary

#CAD575

accent

#F335DD

background

#F9F6FE

surface

#F2EBFC

border

#CCC6D5

text

#0D0516

muted

#7E7A84

Preview Lab

Preview with #311CD2

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

Preview Lab → · Contrast checker → · Palette generator →