#313588#313588

#313588 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.136 H 275.7°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#313588
RGB	rgb(49, 53, 136)
HSL	hsl(237, 47%, 36%)
HSV	hsv(237, 64%, 53%)
CMYK	cmyk(64%, 61%, 0%, 46.7%)
CIE-LAB	lab(26.67, 25.50, -47.05)
CIE-LCH	lch(26.67, 53.51, 298.45°)
OKLab	oklab(37.8% 0.0134 -0.1353)
OKLCH	oklch(37.8% 0.136 275.7)
XYZ	xyz(6.9822, 4.9762, 23.8803)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313588 #888431

analogous

#316188 #313588 #593188

triadic

#313588 #883135 #358831

tetradic

#313588 #883161 #888431 #318859

square

#313588 #883161 #888431 #318859

split-complementary

#313588 #885931 #618831

monochromatic

#11122E #21235B #313588 #4147B5 #6A6EC9

Accessibility & contrast

On white

10.52

#313588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#313588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313588

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313588	#FFFFFF	#000000	##FFFFFF
##313588	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438B

Deuteranopia (green-blind)

#003B86

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #313588;
/* rgb */ color: rgb(49, 53, 136);
/* oklch */ color: oklch(37.8% 0.136 275.7);

Tailwind

colors: {
  custom: {
    50: '#736cab',
    500: '#313588',
    950: '#000000',
  },
}

SCSS

$custom: #313588;
$custom-light: #736cab;
$custom-dark: #000000;

JSON

{
  "hex": "#313588",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 237.241,
    "s": 47.027,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37804,
    "c": 0.13599,
    "h": 275.7
  },
  "luminance": 0.04977
}

Semantic roles & 50–950 ramp

primary

#313588

secondary

#B1AD64

accent

#D151D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313588

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

Preview Lab → · Contrast checker → · Palette generator →