#3131A6#3131A6

#3131A6 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.9% C 0.182 H 274.4°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#3131A6
RGB	rgb(49, 49, 166)
HSL	hsl(240, 54%, 42%)
HSV	hsv(240, 70%, 65%)
CMYK	cmyk(70.5%, 70.5%, 0%, 34.9%)
CIE-LAB	lab(28.39, 38.64, -62.61)
CIE-LCH	lch(28.39, 73.58, 301.68°)
OKLab	oklab(39.88% 0.014 -0.181)
OKLCH	oklch(39.88% 0.182 274.4)
XYZ	xyz(9.2456, 5.6019, 36.6630)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131A6 #A6A631

analogous

#316CA6 #3131A6 #6C31A6

triadic

#3131A6 #A63131 #31A631

tetradic

#3131A6 #A6316C #A6A631 #31A66C

square

#3131A6 #A6316C #A6A631 #31A66C

split-complementary

#3131A6 #A66C31 #6CA631

monochromatic

#151547 #232377 #3131A6 #4A4ACA #7A7AD8

Accessibility & contrast

On white

9.90

#3131A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3131A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131A6

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131A6	#FFFFFF	#000000	##FFFFFF
##3131A6	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AA

Deuteranopia (green-blind)

#003DA4

Tritanopia (blue-blind)

#005168

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3131a6;
/* rgb */ color: rgb(49, 49, 166);
/* oklch */ color: oklch(39.9% 0.182 274.4);

Tailwind

colors: {
  custom: {
    50: '#7a6ac2',
    500: '#3131a6',
    950: '#000000',
  },
}

SCSS

$custom: #3131a6;
$custom-light: #7a6ac2;
$custom-dark: #000000;

JSON

{
  "hex": "#3131a6",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 166
  },
  "hsl": {
    "h": 240,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.39882,
    "c": 0.18151,
    "h": 274.4
  },
  "luminance": 0.05603
}

Semantic roles & 50–950 ramp

primary

#3131A6

secondary

#C0C073

accent

#DE4ADE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3131A6

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

Preview Lab → · Contrast checker → · Palette generator →