#5155CC#5155CC

#5155CC is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.5% C 0.181 H 276.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#5155CC
RGB	rgb(81, 85, 204)
HSL	hsl(238, 55%, 56%)
HSV	hsv(238, 60%, 80%)
CMYK	cmyk(60.3%, 58.3%, 0%, 20%)
CIE-LAB	lab(42.16, 33.96, -62.43)
CIE-LCH	lch(42.16, 71.06, 298.54°)
OKLab	oklab(51.5% 0.0206 -0.1794)
OKLCH	oklch(51.5% 0.181 276.5)
XYZ	xyz(17.5374, 12.6046, 58.6238)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5155CC #CCC851

analogous

#5192CC #5155CC #8A51CC

triadic

#5155CC #CC5155 #55CC51

tetradic

#5155CC #CC5192 #CCC851 #51CC8A

square

#5155CC #CC5192 #CCC851 #51CC8A

split-complementary

#5155CC #CC8A51 #92CC51

monochromatic

#25287E #3337AD #5155CC #8083DA #B0B1E8

Accessibility & contrast

On white

5.96

#5155CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#5155CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5155CC

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5155CC	#FFFFFF	#000000	##FFFFFF
##5155CC	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005ECA

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5155cc;
/* rgb */ color: rgb(81, 85, 204);
/* oklch */ color: oklch(51.5% 0.181 276.5);

Tailwind

colors: {
  custom: {
    50: '#8e85dc',
    500: '#5155cc',
    950: '#000000',
  },
}

SCSS

$custom: #5155cc;
$custom-light: #8e85dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5155cc",
  "rgb": {
    "r": 81,
    "g": 85,
    "b": 204
  },
  "hsl": {
    "h": 238.049,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.51501,
    "c": 0.18058,
    "h": 276.5
  },
  "luminance": 0.12606
}

Semantic roles & 50–950 ramp

primary

#5155CC

secondary

#D6D4A3

accent

#D94ADE

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5155CC

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

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