#311FA8#311FA8

#311FA8 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 37.6% C 0.201 H 276.5°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#311FA8
RGB	rgb(49, 31, 168)
HSL	hsl(248, 69%, 39%)
HSV	hsv(248, 82%, 66%)
CMYK	cmyk(70.8%, 81.5%, 0%, 34.1%)
CIE-LAB	lab(25.14, 49.08, -69.19)
CIE-LCH	lch(25.14, 84.83, 305.35°)
OKLab	oklab(37.65% 0.0229 -0.2)
OKLCH	oklch(37.65% 0.201 276.5)
XYZ	xyz(8.8222, 4.4593, 37.4340)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311FA8 #96A81F

analogous

#1F52A8 #311FA8 #761FA8

triadic

#311FA8 #A8311F #1FA831

tetradic

#311FA8 #A81F52 #96A81F #1FA876

square

#311FA8 #A81F52 #96A81F #1FA876

split-complementary

#311FA8 #A8761F #52A81F

monochromatic

#130C41 #221574 #311FA8 #432CD8 #7160E2

Accessibility & contrast

On white

11.10

#311FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#311FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311FA8

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311FA8	#FFFFFF	#000000	##FFFFFF
##311FA8	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AC

Deuteranopia (green-blind)

#0036A6

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #311fa8;
/* rgb */ color: rgb(49, 31, 168);
/* oklch */ color: oklch(37.6% 0.201 276.5);

Tailwind

colors: {
  custom: {
    50: '#7c5fc3',
    500: '#311fa8',
    950: '#000000',
  },
}

SCSS

$custom: #311fa8;
$custom-light: #7c5fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#311fa8",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 168
  },
  "hsl": {
    "h": 247.883,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37649,
    "c": 0.20127,
    "h": 276.5
  },
  "luminance": 0.0446
}

Semantic roles & 50–950 ramp

primary

#311FA8

secondary

#B8C65D

accent

#EC3CD5

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #311FA8

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

Preview Lab → · Contrast checker → · Palette generator →