#3151A8#3151A8

#3151A8 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.1% C 0.145 H 265.7°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#3151A8
RGB	rgb(49, 81, 168)
HSL	hsl(224, 55%, 43%)
HSV	hsv(224, 71%, 66%)
CMYK	cmyk(70.8%, 51.8%, 0%, 34.1%)
CIE-LAB	lab(36.68, 18.62, -50.30)
CIE-LCH	lch(36.68, 53.64, 290.32°)
OKLab	oklab(46.08% -0.0107 -0.1445)
OKLCH	oklch(46.08% 0.145 265.7)
XYZ	xyz(11.2745, 9.3638, 38.2514)
Luminance	0.0936 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151A8 #A88831

analogous

#318CA8 #3151A8 #4D31A8

triadic

#3151A8 #A83151 #51A831

tetradic

#3151A8 #A8318C #A88831 #31A84D

square

#3151A8 #A8318C #A88831 #31A84D

split-complementary

#3151A8 #A84D31 #8CA831

monochromatic

#152349 #233A79 #3151A8 #4C6ECB #7B94D8

Accessibility & contrast

On white

7.31

#3151A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3151A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151A8

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151A8	#FFFFFF	#000000	##FFFFFF
##3151A8	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B5CAB

Deuteranopia (green-blind)

#0051A6

Tritanopia (blue-blind)

#006674

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3151a8;
/* rgb */ color: rgb(49, 81, 168);
/* oklch */ color: oklch(46.1% 0.145 265.7);

Tailwind

colors: {
  custom: {
    50: '#7881c2',
    500: '#3151a8',
    950: '#000000',
  },
}

SCSS

$custom: #3151a8;
$custom-light: #7881c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3151a8",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 168
  },
  "hsl": {
    "h": 223.866,
    "s": 54.839,
    "l": 42.549
  },
  "oklch": {
    "l": 0.46076,
    "c": 0.14493,
    "h": 265.7
  },
  "luminance": 0.09365
}

Semantic roles & 50–950 ramp

primary

#3151A8

secondary

#C1AC74

accent

#B64ADE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3151A8

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

Preview Lab → · Contrast checker → · Palette generator →