#3151A7#3151A7

#3151A7 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.0% C 0.144 H 265.7°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3151A7
RGB	rgb(49, 81, 167)
HSL	hsl(224, 55%, 42%)
HSV	hsv(224, 71%, 65%)
CMYK	cmyk(70.7%, 51.5%, 0%, 34.5%)
CIE-LAB	lab(36.61, 18.25, -49.82)
CIE-LCH	lch(36.61, 53.05, 290.12°)
OKLab	oklab(46% -0.0109 -0.1431)
OKLCH	oklch(46% 0.144 265.7)
XYZ	xyz(11.1817, 9.3267, 37.7627)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151A7 #A78731

analogous

#318CA7 #3151A7 #4C31A7

triadic

#3151A7 #A73151 #51A731

tetradic

#3151A7 #A7318C #A78731 #31A74C

square

#3151A7 #A7318C #A78731 #31A74C

split-complementary

#3151A7 #A74C31 #8CA731

monochromatic

#152348 #233A78 #3151A7 #4B6DCA #7A94D8

Accessibility & contrast

On white

7.33

#3151A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3151A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151A7

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151A7	#FFFFFF	#000000	##FFFFFF
##3151A7	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D5CAA

Deuteranopia (green-blind)

#0051A5

Tritanopia (blue-blind)

#006574

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3151a7;
/* rgb */ color: rgb(49, 81, 167);
/* oklch */ color: oklch(46.0% 0.144 265.7);

Tailwind

colors: {
  custom: {
    50: '#7881c2',
    500: '#3151a7',
    950: '#000000',
  },
}

SCSS

$custom: #3151a7;
$custom-light: #7881c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3151a7",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 167
  },
  "hsl": {
    "h": 223.729,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.46001,
    "c": 0.14351,
    "h": 265.7
  },
  "luminance": 0.09328
}

Semantic roles & 50–950 ramp

primary

#3151A7

secondary

#C1AC73

accent

#B64ADE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3151A7

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

Preview Lab → · Contrast checker → · Palette generator →