#5157BB#5157BB

#5157BB is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.6% C 0.155 H 276.8°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#5157BB
RGB	rgb(81, 87, 187)
HSL	hsl(237, 44%, 53%)
HSV	hsv(237, 57%, 73%)
CMYK	cmyk(56.7%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(41.46, 27.08, -53.70)
CIE-LCH	lch(41.46, 60.14, 296.76°)
OKLab	oklab(50.6% 0.0182 -0.1537)
OKLCH	oklch(50.6% 0.155 276.8)
XYZ	xyz(15.7683, 12.1525, 48.5188)
Luminance	0.1215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5157BB #BBB551

analogous

#518CBB #5157BB #8051BB

triadic

#5157BB #BB5157 #57BB51

tetradic

#5157BB #BB518C #BBB551 #51BB80

square

#5157BB #BB518C #BBB551 #51BB80

split-complementary

#5157BB #BB8051 #8CBB51

monochromatic

#292D69 #3A3F95 #5157BB #7D81CC #A9ACDD

Accessibility & contrast

On white

6.12

#5157BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#5157BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5157BB

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5157BB	#FFFFFF	#000000	##FFFFFF
##5157BB	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B66BE

Deuteranopia (green-blind)

#005EB9

Tritanopia (blue-blind)

#146E80

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5157bb;
/* rgb */ color: rgb(81, 87, 187);
/* oklch */ color: oklch(50.6% 0.155 276.8);

Tailwind

colors: {
  custom: {
    50: '#8b86d0',
    500: '#5157bb',
    950: '#000000',
  },
}

SCSS

$custom: #5157bb;
$custom-light: #8b86d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5157bb",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 236.604,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.50596,
    "c": 0.15477,
    "h": 276.8
  },
  "luminance": 0.12154
}

Semantic roles & 50–950 ramp

primary

#5157BB

secondary

#CBC89D

accent

#CC54D4

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0D0B14

muted

#7D7C82

Preview Lab

Preview with #5157BB

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

Preview Lab → · Contrast checker → · Palette generator →