#5B71CA#5B71CA

#5B71CA is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.4% C 0.139 H 271.0°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#5B71CA
RGB	rgb(91, 113, 202)
HSL	hsl(228, 51%, 57%)
HSV	hsv(228, 55%, 79%)
CMYK	cmyk(55%, 44.1%, 0%, 20.8%)
CIE-LAB	lab(49.85, 17.82, -48.86)
CIE-LCH	lch(49.85, 52.01, 290.04°)
OKLab	oklab(57.42% 0.0025 -0.139)
OKLCH	oklch(57.42% 0.139 271)
XYZ	xyz(20.8767, 18.2972, 58.2973)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B71CA #CAB45B

analogous

#5BA9CA #5B71CA #7C5BCA

triadic

#5B71CA #CA5B71 #71CA5B

tetradic

#5B71CA #CA5BA9 #CAB45B #5BCA7C

square

#5B71CA #CA5BA9 #CAB45B #5BCA7C

split-complementary

#5B71CA #CA7C5B #A9CA5B

monochromatic

#2A3B81 #3950AF #5B71CA #8999D9 #B8C1E8

Accessibility & contrast

On white

4.51

#5B71CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#5B71CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B71CA

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B71CA	#FFFFFF	#000000	##000000
##5B71CA	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7CCD

Deuteranopia (green-blind)

#3C72C8

Tritanopia (blue-blind)

#1E8594

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5b71ca;
/* rgb */ color: rgb(91, 113, 202);
/* oklch */ color: oklch(57.4% 0.139 271.0);

Tailwind

colors: {
  custom: {
    50: '#9199da',
    500: '#5b71ca',
    950: '#000000',
  },
}

SCSS

$custom: #5b71ca;
$custom-light: #9199da;
$custom-dark: #000000;

JSON

{
  "hex": "#5b71ca",
  "rgb": {
    "r": 91,
    "g": 113,
    "b": 202
  },
  "hsl": {
    "h": 228.108,
    "s": 51.152,
    "l": 57.451
  },
  "oklch": {
    "l": 0.57424,
    "c": 0.13901,
    "h": 271
  },
  "luminance": 0.18299
}

Semantic roles & 50–950 ramp

primary

#5B71CA

secondary

#D7CEAA

accent

#BF4DDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5B71CA

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

Preview Lab → · Contrast checker → · Palette generator →