#3131AE#3131AE

#3131AE is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.7% C 0.192 H 273.8°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#3131AE
RGB	rgb(49, 49, 174)
HSL	hsl(240, 56%, 44%)
HSV	hsv(240, 72%, 68%)
CMYK	cmyk(71.8%, 71.8%, 0%, 31.8%)
CIE-LAB	lab(29.17, 41.36, -66.13)
CIE-LCH	lch(29.17, 78.00, 302.02°)
OKLab	oklab(40.68% 0.0128 -0.1912)
OKLCH	oklch(40.68% 0.192 273.8)
XYZ	xyz(10.0024, 5.9046, 40.6488)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131AE #AEAE31

analogous

#316FAE #3131AE #6F31AE

triadic

#3131AE #AE3131 #31AE31

tetradic

#3131AE #AE316F #AEAE31 #31AE6F

square

#3131AE #AE316F #AEAE31 #31AE6F

split-complementary

#3131AE #AE6F31 #6FAE31

monochromatic

#16164E #24247E #3131AE #4F4FCD #7F7FDB

Accessibility & contrast

On white

9.63

#3131AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3131AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131AE

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131AE	#FFFFFF	#000000	##FFFFFF
##3131AE	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB2

Deuteranopia (green-blind)

#003FAC

Tritanopia (blue-blind)

#00546C

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3131ae;
/* rgb */ color: rgb(49, 49, 174);
/* oklch */ color: oklch(40.7% 0.192 273.8);

Tailwind

colors: {
  custom: {
    50: '#7c6ac7',
    500: '#3131ae',
    950: '#000000',
  },
}

SCSS

$custom: #3131ae;
$custom-light: #7c6ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#3131ae",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 174
  },
  "hsl": {
    "h": 240,
    "s": 56.054,
    "l": 43.725
  },
  "oklch": {
    "l": 0.40683,
    "c": 0.19167,
    "h": 273.8
  },
  "luminance": 0.05906
}

Semantic roles & 50–950 ramp

primary

#3131AE

secondary

#C4C477

accent

#DF48DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3131AE

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

Preview Lab → · Contrast checker → · Palette generator →