#5151CE#5151CE

#5151CE is a mid, vivid blue. Relative luminance 0.121; OKLCH L 51.0% C 0.188 H 277.4°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#5151CE
RGB	rgb(81, 81, 206)
HSL	hsl(240, 56%, 56%)
HSV	hsv(240, 61%, 81%)
CMYK	cmyk(60.7%, 60.7%, 0%, 19.2%)
CIE-LAB	lab(41.36, 37.07, -64.89)
CIE-LCH	lch(41.36, 74.73, 299.74°)
OKLab	oklab(50.96% 0.0242 -0.1867)
OKLCH	oklch(50.96% 0.188 277.4)
XYZ	xyz(17.4728, 12.0891, 59.7932)
Luminance	0.1209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151CE #CECE51

analogous

#5190CE #5151CE #9051CE

triadic

#5151CE #CE5151 #51CE51

tetradic

#5151CE #CE5190 #CECE51 #51CE90

square

#5151CE #CE5190 #CECE51 #51CE90

split-complementary

#5151CE #CE9051 #90CE51

monochromatic

#242480 #3232B0 #5151CE #8181DB #B1B1E9

Accessibility & contrast

On white

6.14

#5151CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#5151CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151CE

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151CE	#FFFFFF	#000000	##FFFFFF
##5151CE	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D2

Deuteranopia (green-blind)

#005CCC

Tritanopia (blue-blind)

#007088

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5151ce;
/* rgb */ color: rgb(81, 81, 206);
/* oklch */ color: oklch(51.0% 0.188 277.4);

Tailwind

colors: {
  custom: {
    50: '#8e82de',
    500: '#5151ce',
    950: '#000000',
  },
}

SCSS

$custom: #5151ce;
$custom-light: #8e82de;
$custom-dark: #000000;

JSON

{
  "hex": "#5151ce",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 206
  },
  "hsl": {
    "h": 240,
    "s": 56.054,
    "l": 56.275
  },
  "oklch": {
    "l": 0.50955,
    "c": 0.18822,
    "h": 277.4
  },
  "luminance": 0.1209
}

Semantic roles & 50–950 ramp

primary

#5151CE

secondary

#D7D7A4

accent

#DF48DF

background

#F9F7FD

surface

#F2EEFB

border

#CCC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #5151CE

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

Preview Lab → · Contrast checker → · Palette generator →