#313F97#313F97

#313F97 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.144 H 271.7°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#313F97
RGB	rgb(49, 63, 151)
HSL	hsl(232, 51%, 39%)
HSV	hsv(232, 68%, 59%)
CMYK	cmyk(67.5%, 58.3%, 0%, 40.8%)
CIE-LAB	lab(30.50, 24.28, -50.06)
CIE-LCH	lch(30.50, 55.64, 295.88°)
OKLab	oklab(41.03% 0.0042 -0.1441)
OKLCH	oklch(41.03% 0.144 271.7)
XYZ	xyz(8.6282, 6.4416, 30.0608)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F97 #978931

analogous

#317297 #313F97 #563197

triadic

#313F97 #97313F #3F9731

tetradic

#313F97 #973172 #978931 #319756

square

#313F97 #973172 #978931 #319756

split-complementary

#313F97 #975631 #729731

monochromatic

#13183B #222C69 #313F97 #4355C2 #717ED1

Accessibility & contrast

On white

9.18

#313F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#313F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F97

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F97	#FFFFFF	#000000	##FFFFFF
##313F97	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9A

Deuteranopia (green-blind)

#004395

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313f97;
/* rgb */ color: rgb(49, 63, 151);
/* oklch */ color: oklch(41.0% 0.144 271.7);

Tailwind

colors: {
  custom: {
    50: '#7673b6',
    500: '#313f97',
    950: '#000000',
  },
}

SCSS

$custom: #313f97;
$custom-light: #7673b6;
$custom-dark: #000000;

JSON

{
  "hex": "#313f97",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 151
  },
  "hsl": {
    "h": 231.765,
    "s": 51,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41028,
    "c": 0.14413,
    "h": 271.7
  },
  "luminance": 0.06442
}

Semantic roles & 50–950 ramp

primary

#313F97

secondary

#B9AE6B

accent

#C74DDA

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #313F97

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

Preview Lab → · Contrast checker → · Palette generator →