#311FA6#311FA6

#311FA6 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.4% C 0.199 H 276.8°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#311FA6
RGB	rgb(49, 31, 166)
HSL	hsl(248, 69%, 39%)
HSV	hsv(248, 81%, 65%)
CMYK	cmyk(70.5%, 81.3%, 0%, 34.9%)
CIE-LAB	lab(24.91, 48.47, -68.36)
CIE-LCH	lch(24.91, 83.80, 305.34°)
OKLab	oklab(37.42% 0.0235 -0.1975)
OKLCH	oklch(37.42% 0.199 276.8)
XYZ	xyz(8.6373, 4.3853, 36.4603)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311FA6 #94A61F

analogous

#1F50A6 #311FA6 #741FA6

triadic

#311FA6 #A6311F #1FA631

tetradic

#311FA6 #A61F50 #94A61F #1FA674

square

#311FA6 #A61F50 #94A61F #1FA674

split-complementary

#311FA6 #A6741F #50A61F

monochromatic

#130C3F #221572 #311FA6 #422BD7 #705EE1

Accessibility & contrast

On white

11.19

#311FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#311FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311FA6

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311FA6	#FFFFFF	#000000	##FFFFFF
##311FA6	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AA

Deuteranopia (green-blind)

#0035A4

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #311fa6;
/* rgb */ color: rgb(49, 31, 166);
/* oklch */ color: oklch(37.4% 0.199 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c5fc2',
    500: '#311fa6',
    950: '#000000',
  },
}

SCSS

$custom: #311fa6;
$custom-light: #7c5fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#311fa6",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 166
  },
  "hsl": {
    "h": 248,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.37424,
    "c": 0.19893,
    "h": 276.8
  },
  "luminance": 0.04386
}

Semantic roles & 50–950 ramp

primary

#311FA6

secondary

#B7C55B

accent

#EB3CD4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311FA6

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

Preview Lab → · Contrast checker → · Palette generator →