#5151BD#5151BD

#5151BD is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.6% C 0.165 H 278.5°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#5151BD
RGB	rgb(81, 81, 189)
HSL	hsl(240, 45%, 53%)
HSV	hsv(240, 57%, 74%)
CMYK	cmyk(57.1%, 57.1%, 0%, 25.9%)
CIE-LAB	lab(40.09, 31.50, -57.07)
CIE-LCH	lch(40.09, 65.19, 298.89°)
OKLab	oklab(49.62% 0.0245 -0.1637)
OKLCH	oklch(49.62% 0.165 278.5)
XYZ	xyz(15.5182, 11.3072, 49.4990)
Luminance	0.1131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151BD #BDBD51

analogous

#5187BD #5151BD #8751BD

triadic

#5151BD #BD5151 #51BD51

tetradic

#5151BD #BD5187 #BDBD51 #51BD87

square

#5151BD #BD5187 #BDBD51 #51BD87

split-complementary

#5151BD #BD8751 #87BD51

monochromatic

#29296B #393997 #5151BD #7D7DCE #AAAADF

Accessibility & contrast

On white

6.44

#5151BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#5151BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151BD

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151BD	#FFFFFF	#000000	##FFFFFF
##5151BD	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C1

Deuteranopia (green-blind)

#005ABB

Tritanopia (blue-blind)

#126A7F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #5151bd;
/* rgb */ color: rgb(81, 81, 189);
/* oklch */ color: oklch(49.6% 0.165 278.5);

Tailwind

colors: {
  custom: {
    50: '#8b82d2',
    500: '#5151bd',
    950: '#000000',
  },
}

SCSS

$custom: #5151bd;
$custom-light: #8b82d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5151bd",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 189
  },
  "hsl": {
    "h": 240,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.49623,
    "c": 0.16549,
    "h": 278.5
  },
  "luminance": 0.11308
}

Semantic roles & 50–950 ramp

primary

#5151BD

secondary

#CCCC9E

accent

#D553D5

background

#F9F7FD

surface

#F1EEFA

border

#CBC9D3

text

#0D0A14

muted

#7E7C83

Preview Lab

Preview with #5151BD

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

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