#5159BB#5159BB

#5159BB is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.0% C 0.152 H 276.1°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#5159BB
RGB	rgb(81, 89, 187)
HSL	hsl(235, 44%, 53%)
HSV	hsv(235, 57%, 73%)
CMYK	cmyk(56.7%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(41.97, 25.82, -52.87)
CIE-LCH	lch(41.97, 58.84, 296.03°)
OKLab	oklab(50.98% 0.0161 -0.1512)
OKLCH	oklch(50.98% 0.152 276.1)
XYZ	xyz(15.9325, 12.4808, 48.5735)
Luminance	0.1248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5159BB #BBB351

analogous

#518EBB #5159BB #7E51BB

triadic

#5159BB #BB5159 #59BB51

tetradic

#5159BB #BB518E #BBB351 #51BB7E

square

#5159BB #BB518E #BBB351 #51BB7E

split-complementary

#5159BB #BB7E51 #8EBB51

monochromatic

#292E69 #3A4195 #5159BB #7D83CC #A9ADDD

Accessibility & contrast

On white

6.01

#5159BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#5159BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5159BB

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5159BB	#FFFFFF	#000000	##FFFFFF
##5159BB	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2268BE

Deuteranopia (green-blind)

#0A5FB9

Tritanopia (blue-blind)

#146F81

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5159bb;
/* rgb */ color: rgb(81, 89, 187);
/* oklch */ color: oklch(51.0% 0.152 276.1);

Tailwind

colors: {
  custom: {
    50: '#8b87d0',
    500: '#5159bb',
    950: '#000000',
  },
}

SCSS

$custom: #5159bb;
$custom-light: #8b87d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5159bb",
  "rgb": {
    "r": 81,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 235.472,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.50981,
    "c": 0.15209,
    "h": 276.1
  },
  "luminance": 0.12482
}

Semantic roles & 50–950 ramp

primary

#5159BB

secondary

#CBC79D

accent

#CA54D4

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0D0B14

muted

#7D7C82

Preview Lab

Preview with #5159BB

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

Preview Lab → · Contrast checker → · Palette generator →