#311CA6#311CA6

#311CA6 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.1% C 0.201 H 277.1°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#311CA6
RGB	rgb(49, 28, 166)
HSL	hsl(249, 71%, 38%)
HSV	hsv(249, 83%, 65%)
CMYK	cmyk(70.5%, 83.1%, 0%, 34.9%)
CIE-LAB	lab(24.44, 49.85, -69.13)
CIE-LCH	lch(24.44, 85.23, 305.79°)
OKLab	oklab(37.1% 0.0247 -0.1998)
OKLCH	oklch(37.1% 0.201 277.1)
XYZ	xyz(8.5626, 4.2359, 36.4354)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311CA6 #91A61C

analogous

#1C4CA6 #311CA6 #761CA6

triadic

#311CA6 #A6311C #1CA631

tetradic

#311CA6 #A61C4C #91A61C #1CA676

square

#311CA6 #A61C4C #91A61C #1CA676

split-complementary

#311CA6 #A6761C #4CA61C

monochromatic

#120A3D #221372 #311CA6 #4125DA #6E59E3

Accessibility & contrast

On white

11.37

#311CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#311CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311CA6

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311CA6	#FFFFFF	#000000	##FFFFFF
##311CA6	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAA

Deuteranopia (green-blind)

#0034A4

Tritanopia (blue-blind)

#004863

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #311ca6;
/* rgb */ color: rgb(49, 28, 166);
/* oklch */ color: oklch(37.1% 0.201 277.1);

Tailwind

colors: {
  custom: {
    50: '#7c5ec2',
    500: '#311ca6',
    950: '#000000',
  },
}

SCSS

$custom: #311ca6;
$custom-light: #7c5ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#311ca6",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 166
  },
  "hsl": {
    "h": 249.13,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.37099,
    "c": 0.20128,
    "h": 277.1
  },
  "luminance": 0.04237
}

Semantic roles & 50–950 ramp

primary

#311CA6

secondary

#B6C757

accent

#EE3AD3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311CA6

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

Preview Lab → · Contrast checker → · Palette generator →