#313591#313591

#313591 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.149 H 275.1°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#313591
RGB	rgb(49, 53, 145)
HSL	hsl(238, 49%, 38%)
HSV	hsv(238, 66%, 57%)
CMYK	cmyk(66.2%, 63.4%, 0%, 43.1%)
CIE-LAB	lab(27.42, 28.73, -51.40)
CIE-LCH	lch(27.42, 58.89, 299.20°)
OKLab	oklab(38.59% 0.0131 -0.1481)
OKLCH	oklch(38.59% 0.149 275.1)
XYZ	xyz(7.6489, 5.2429, 27.3915)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313591 #918D31

analogous

#316591 #313591 #5D3191

triadic

#313591 #913135 #359131

tetradic

#313591 #913165 #918D31 #31915D

square

#313591 #913165 #918D31 #31915D

split-complementary

#313591 #915D31 #659131

monochromatic

#121436 #222463 #313591 #4146BF #6E72CE

Accessibility & contrast

On white

10.25

#313591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#313591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313591

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313591	#FFFFFF	#000000	##FFFFFF
##313591	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004594

Deuteranopia (green-blind)

#003D8F

Tritanopia (blue-blind)

#004C5E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313591;
/* rgb */ color: rgb(49, 53, 145);
/* oklch */ color: oklch(38.6% 0.149 275.1);

Tailwind

colors: {
  custom: {
    50: '#756cb2',
    500: '#313591',
    950: '#000000',
  },
}

SCSS

$custom: #313591;
$custom-light: #756cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#313591",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 145
  },
  "hsl": {
    "h": 237.5,
    "s": 49.485,
    "l": 38.039
  },
  "oklch": {
    "l": 0.3859,
    "c": 0.14869,
    "h": 275.1
  },
  "luminance": 0.05244
}

Semantic roles & 50–950 ramp

primary

#313591

secondary

#B6B268

accent

#D34FD9

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #313591

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

Preview Lab → · Contrast checker → · Palette generator →