#313F90#313F90

#313F90 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.134 H 271.7°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#313F90
RGB	rgb(49, 63, 144)
HSL	hsl(231, 49%, 38%)
HSV	hsv(231, 66%, 56%)
CMYK	cmyk(66%, 56.3%, 0%, 43.5%)
CIE-LAB	lab(29.96, 21.70, -46.64)
CIE-LCH	lch(29.96, 51.45, 294.95°)
OKLab	oklab(40.46% 0.0039 -0.134)
OKLCH	oklch(40.46% 0.134 271.7)
XYZ	xyz(8.0765, 6.2209, 27.1553)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F90 #908231

analogous

#316E90 #313F90 #523190

triadic

#313F90 #90313F #3F9031

tetradic

#313F90 #90316E #908231 #319052

square

#313F90 #90316E #908231 #319052

split-complementary

#313F90 #905231 #6E9031

monochromatic

#121735 #212B62 #313F90 #4153BE #6E7CCE

Accessibility & contrast

On white

9.36

#313F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#313F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F90

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F90	#FFFFFF	#000000	##FFFFFF
##313F90	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B93

Deuteranopia (green-blind)

#00428E

Tritanopia (blue-blind)

#005261

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313f90;
/* rgb */ color: rgb(49, 63, 144);
/* oklch */ color: oklch(40.5% 0.134 271.7);

Tailwind

colors: {
  custom: {
    50: '#7473b1',
    500: '#313f90',
    950: '#000000',
  },
}

SCSS

$custom: #313f90;
$custom-light: #7473b1;
$custom-dark: #000000;

JSON

{
  "hex": "#313f90",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 144
  },
  "hsl": {
    "h": 231.158,
    "s": 49.223,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40457,
    "c": 0.13409,
    "h": 271.7
  },
  "luminance": 0.06222
}

Semantic roles & 50–950 ramp

primary

#313F90

secondary

#B5AA68

accent

#C44FD9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #313F90

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

Preview Lab → · Contrast checker → · Palette generator →