#5151CD#5151CD

#5151CD is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.9% C 0.187 H 277.4°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#5151CD
RGB	rgb(81, 81, 205)
HSL	hsl(240, 55%, 56%)
HSV	hsv(240, 60%, 80%)
CMYK	cmyk(60.5%, 60.5%, 0%, 19.6%)
CIE-LAB	lab(41.28, 36.74, -64.44)
CIE-LCH	lch(41.28, 74.18, 299.69°)
OKLab	oklab(50.88% 0.0242 -0.1853)
OKLCH	oklch(50.88% 0.187 277.4)
XYZ	xyz(17.3517, 12.0406, 59.1555)
Luminance	0.1204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151CD #CDCD51

analogous

#518FCD #5151CD #8F51CD

triadic

#5151CD #CD5151 #51CD51

tetradic

#5151CD #CD518F #CDCD51 #51CD8F

square

#5151CD #CD518F #CDCD51 #51CD8F

split-complementary

#5151CD #CD8F51 #8FCD51

monochromatic

#25257F #3232AF #5151CD #8181DB #B0B0E8

Accessibility & contrast

On white

6.16

#5151CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#5151CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151CD

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151CD	#FFFFFF	#000000	##FFFFFF
##5151CD	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D1

Deuteranopia (green-blind)

#005CCB

Tritanopia (blue-blind)

#006F87

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #5151cd;
/* rgb */ color: rgb(81, 81, 205);
/* oklch */ color: oklch(50.9% 0.187 277.4);

Tailwind

colors: {
  custom: {
    50: '#8e82dd',
    500: '#5151cd',
    950: '#000000',
  },
}

SCSS

$custom: #5151cd;
$custom-light: #8e82dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5151cd",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 205
  },
  "hsl": {
    "h": 240,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.50875,
    "c": 0.18691,
    "h": 277.4
  },
  "luminance": 0.12042
}

Semantic roles & 50–950 ramp

primary

#5151CD

secondary

#D7D7A3

accent

#DF49DF

background

#F9F7FD

surface

#F2EEFB

border

#CCC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #5151CD

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

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