#311E9F#311E9F

#311E9F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.5% C 0.192 H 277.8°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#311E9F
RGB	rgb(49, 30, 159)
HSL	hsl(249, 68%, 37%)
HSV	hsv(249, 81%, 62%)
CMYK	cmyk(69.2%, 81.1%, 0%, 37.6%)
CIE-LAB	lab(23.95, 46.82, -65.69)
CIE-LCH	lch(23.95, 80.66, 305.48°)
OKLab	oklab(36.53% 0.026 -0.1898)
OKLCH	oklch(36.53% 0.192 277.8)
XYZ	xyz(7.9869, 4.0840, 33.1616)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311E9F #8C9F1E

analogous

#1E4C9F #311E9F #721E9F

triadic

#311E9F #9F311E #1E9F31

tetradic

#311E9F #9F1E4C #8C9F1E #1E9F72

square

#311E9F #9F1E4C #8C9F1E #1E9F72

split-complementary

#311E9F #9F721E #4C9F1E

monochromatic

#110B38 #21146C #311E9F #4128D2 #6C58DF

Accessibility & contrast

On white

11.56

#311E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#311E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311E9F

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311E9F	#FFFFFF	#000000	##FFFFFF
##311E9F	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA3

Deuteranopia (green-blind)

#00349D

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #311e9f;
/* rgb */ color: rgb(49, 30, 159);
/* oklch */ color: oklch(36.5% 0.192 277.8);

Tailwind

colors: {
  custom: {
    50: '#7a5ebd',
    500: '#311e9f',
    950: '#000000',
  },
}

SCSS

$custom: #311e9f;
$custom-light: #7a5ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#311e9f",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 159
  },
  "hsl": {
    "h": 248.837,
    "s": 68.254,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36526,
    "c": 0.19155,
    "h": 277.8
  },
  "luminance": 0.04085
}

Semantic roles & 50–950 ramp

primary

#311E9F

secondary

#B3C356

accent

#EB3DD1

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #311E9F

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

Preview Lab → · Contrast checker → · Palette generator →