#313C91#313C91

#313C91 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.140 H 272.8°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#313C91
RGB	rgb(49, 60, 145)
HSL	hsl(233, 49%, 38%)
HSV	hsv(233, 66%, 57%)
CMYK	cmyk(66.2%, 58.6%, 0%, 43.1%)
CIE-LAB	lab(29.23, 24.09, -48.45)
CIE-LCH	lch(29.23, 54.10, 296.43°)
OKLab	oklab(39.93% 0.0068 -0.1394)
OKLCH	oklch(39.93% 0.14 272.8)
XYZ	xyz(7.9916, 5.9283, 27.5057)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C91 #918631

analogous

#316C91 #313C91 #563191

triadic

#313C91 #91313C #3C9131

tetradic

#313C91 #91316C #918631 #319156

square

#313C91 #91316C #918631 #319156

split-complementary

#313C91 #915631 #6C9131

monochromatic

#121636 #222963 #313C91 #414FBF #6E79CE

Accessibility & contrast

On white

9.61

#313C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#313C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C91

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C91	#FFFFFF	#000000	##FFFFFF
##313C91	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004994

Deuteranopia (green-blind)

#00418F

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313c91;
/* rgb */ color: rgb(49, 60, 145);
/* oklch */ color: oklch(39.9% 0.140 272.8);

Tailwind

colors: {
  custom: {
    50: '#7571b2',
    500: '#313c91',
    950: '#000000',
  },
}

SCSS

$custom: #313c91;
$custom-light: #7571b2;
$custom-dark: #000000;

JSON

{
  "hex": "#313c91",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 145
  },
  "hsl": {
    "h": 233.125,
    "s": 49.485,
    "l": 38.039
  },
  "oklch": {
    "l": 0.39934,
    "c": 0.13954,
    "h": 272.8
  },
  "luminance": 0.05929
}

Semantic roles & 50–950 ramp

primary

#313C91

secondary

#B6AD68

accent

#C94FD9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #313C91

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

Preview Lab → · Contrast checker → · Palette generator →