#5B51CA#5B51CA

#5B51CA is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.4% C 0.181 H 281.7°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#5B51CA
RGB	rgb(91, 81, 202)
HSL	hsl(245, 53%, 55%)
HSV	hsv(245, 60%, 79%)
CMYK	cmyk(55%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(41.80, 37.53, -61.82)
CIE-LCH	lch(41.80, 72.32, 301.26°)
OKLab	oklab(51.38% 0.0366 -0.1774)
OKLCH	oklch(51.38% 0.181 281.7)
XYZ	xyz(17.9142, 12.3722, 57.3098)
Luminance	0.1237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B51CA #C0CA51

analogous

#5183CA #5B51CA #9851CA

triadic

#5B51CA #CA5B51 #51CA5B

tetradic

#5B51CA #CA5183 #C0CA51 #51CA98

square

#5B51CA #CA5183 #C0CA51 #51CA98

split-complementary

#5B51CA #CA9851 #83CA51

monochromatic

#2D257B #3E34AA #5B51CA #8780D8 #B3AFE7

Accessibility & contrast

On white

6.04

#5B51CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#5B51CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B51CA

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B51CA	#FFFFFF	#000000	##FFFFFF
##5B51CA	1.00	6.04	3.47	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CE

Deuteranopia (green-blind)

#005EC8

Tritanopia (blue-blind)

#266E86

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5b51ca;
/* rgb */ color: rgb(91, 81, 202);
/* oklch */ color: oklch(51.4% 0.181 281.7);

Tailwind

colors: {
  custom: {
    50: '#9382db',
    500: '#5b51ca',
    950: '#000000',
  },
}

SCSS

$custom: #5b51ca;
$custom-light: #9382db;
$custom-dark: #000000;

JSON

{
  "hex": "#5b51ca",
  "rgb": {
    "r": 91,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 244.959,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.51377,
    "c": 0.18109,
    "h": 281.7
  },
  "luminance": 0.12373
}

Semantic roles & 50–950 ramp

primary

#5B51CA

secondary

#D0D5A2

accent

#DD4BD1

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0A15

muted

#7E7C83

Preview Lab

Preview with #5B51CA

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

Preview Lab → · Contrast checker → · Palette generator →