#311CA8#311CA8

#311CA8 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.3% C 0.204 H 276.8°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#311CA8
RGB	rgb(49, 28, 168)
HSL	hsl(249, 71%, 38%)
HSV	hsv(249, 83%, 66%)
CMYK	cmyk(70.8%, 83.3%, 0%, 34.1%)
CIE-LAB	lab(24.67, 50.44, -69.96)
CIE-LCH	lch(24.67, 86.25, 305.79°)
OKLab	oklab(37.33% 0.0241 -0.2021)
OKLCH	oklch(37.33% 0.204 276.8)
XYZ	xyz(8.7475, 4.3098, 37.4091)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311CA8 #93A81C

analogous

#1C4DA8 #311CA8 #771CA8

triadic

#311CA8 #A8311C #1CA831

tetradic

#311CA8 #A81C4D #93A81C #1CA877

square

#311CA8 #A81C4D #93A81C #1CA877

split-complementary

#311CA8 #A8771C #4DA81C

monochromatic

#120B3F #221374 #311CA8 #4126DB #6F5BE4

Accessibility & contrast

On white

11.28

#311CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#311CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311CA8

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311CA8	#FFFFFF	#000000	##FFFFFF
##311CA8	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AC

Deuteranopia (green-blind)

#0035A6

Tritanopia (blue-blind)

#004964

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311ca8;
/* rgb */ color: rgb(49, 28, 168);
/* oklch */ color: oklch(37.3% 0.204 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c5ec3',
    500: '#311ca8',
    950: '#000000',
  },
}

SCSS

$custom: #311ca8;
$custom-light: #7c5ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#311ca8",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 168
  },
  "hsl": {
    "h": 249,
    "s": 71.429,
    "l": 38.431
  },
  "oklch": {
    "l": 0.37328,
    "c": 0.20357,
    "h": 276.8
  },
  "luminance": 0.04311
}

Semantic roles & 50–950 ramp

primary

#311CA8

secondary

#B7C758

accent

#EE3AD3

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311CA8

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

Preview Lab → · Contrast checker → · Palette generator →