#313B90#313B90

#313B90 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.139 H 273.2°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#313B90
RGB	rgb(49, 59, 144)
HSL	hsl(234, 49%, 38%)
HSV	hsv(234, 66%, 56%)
CMYK	cmyk(66%, 59%, 0%, 43.5%)
CIE-LAB	lab(28.89, 24.39, -48.39)
CIE-LCH	lch(28.89, 54.19, 296.75°)
OKLab	oklab(39.65% 0.0077 -0.1392)
OKLCH	oklch(39.65% 0.139 273.2)
XYZ	xyz(7.8630, 5.7938, 27.0841)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B90 #908631

analogous

#316A90 #313B90 #563190

triadic

#313B90 #90313B #3B9031

tetradic

#313B90 #90316A #908631 #319056

square

#313B90 #90316A #908631 #319056

split-complementary

#313B90 #905631 #6A9031

monochromatic

#121635 #212862 #313B90 #414EBE #6E78CE

Accessibility & contrast

On white

9.73

#313B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#313B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B90

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B90	#FFFFFF	#000000	##FFFFFF
##313B90	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004893

Deuteranopia (green-blind)

#00408E

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313b90;
/* rgb */ color: rgb(49, 59, 144);
/* oklch */ color: oklch(39.7% 0.139 273.2);

Tailwind

colors: {
  custom: {
    50: '#7470b1',
    500: '#313b90',
    950: '#000000',
  },
}

SCSS

$custom: #313b90;
$custom-light: #7470b1;
$custom-dark: #000000;

JSON

{
  "hex": "#313b90",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 144
  },
  "hsl": {
    "h": 233.684,
    "s": 49.223,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39652,
    "c": 0.13943,
    "h": 273.2
  },
  "luminance": 0.05795
}

Semantic roles & 50–950 ramp

primary

#313B90

secondary

#B5AD68

accent

#CA4FD9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #313B90

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

Preview Lab → · Contrast checker → · Palette generator →