#5157CA#5157CA

#5157CA is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.7% C 0.175 H 276.1°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#5157CA
RGB	rgb(81, 87, 202)
HSL	hsl(237, 53%, 55%)
HSV	hsv(237, 60%, 79%)
CMYK	cmyk(59.9%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(42.50, 32.05, -60.72)
CIE-LCH	lch(42.50, 68.66, 297.83°)
OKLab	oklab(51.71% 0.0187 -0.1743)
OKLCH	oklch(51.71% 0.175 276.1)
XYZ	xyz(17.4587, 12.8287, 57.4218)
Luminance	0.1283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5157CA #CAC451

analogous

#5193CA #5157CA #8751CA

triadic

#5157CA #CA5157 #57CA51

tetradic

#5157CA #CA5193 #CAC451 #51CA87

square

#5157CA #CA5193 #CAC451 #51CA87

split-complementary

#5157CA #CA8751 #93CA51

monochromatic

#252A7B #343AAA #5157CA #8084D8 #AFB2E7

Accessibility & contrast

On white

5.89

#5157CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#5157CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5157CA

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5157CA	#FFFFFF	#000000	##FFFFFF
##5157CA	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACE

Deuteranopia (green-blind)

#005FC8

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5157ca;
/* rgb */ color: rgb(81, 87, 202);
/* oklch */ color: oklch(51.7% 0.175 276.1);

Tailwind

colors: {
  custom: {
    50: '#8d86db',
    500: '#5157ca',
    950: '#000000',
  },
}

SCSS

$custom: #5157ca;
$custom-light: #8d86db;
$custom-dark: #000000;

JSON

{
  "hex": "#5157ca",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 237.025,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.5171,
    "c": 0.17535,
    "h": 276.1
  },
  "luminance": 0.1283
}

Semantic roles & 50–950 ramp

primary

#5157CA

secondary

#D5D2A2

accent

#D54BDD

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5157CA

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

Preview Lab → · Contrast checker → · Palette generator →