#5155CB#5155CB

#5155CB is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.4% C 0.179 H 276.6°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#5155CB
RGB	rgb(81, 85, 203)
HSL	hsl(238, 54%, 56%)
HSV	hsv(238, 60%, 80%)
CMYK	cmyk(60.1%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(42.09, 33.62, -61.97)
CIE-LCH	lch(42.09, 70.50, 298.48°)
OKLab	oklab(51.42% 0.0206 -0.1781)
OKLCH	oklch(51.42% 0.179 276.6)
XYZ	xyz(17.4178, 12.5568, 57.9942)
Luminance	0.1256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5155CB #CBC751

analogous

#5192CB #5155CB #8A51CB

triadic

#5155CB #CB5155 #55CB51

tetradic

#5155CB #CB5192 #CBC751 #51CB8A

square

#5155CB #CB5192 #CBC751 #51CB8A

split-complementary

#5155CB #CB8A51 #92CB51

monochromatic

#25287C #3337AC #5155CB #8083D9 #AFB1E7

Accessibility & contrast

On white

5.98

#5155CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#5155CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5155CB

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5155CB	#FFFFFF	#000000	##FFFFFF
##5155CB	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005EC9

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5155cb;
/* rgb */ color: rgb(81, 85, 203);
/* oklch */ color: oklch(51.4% 0.179 276.6);

Tailwind

colors: {
  custom: {
    50: '#8d85dc',
    500: '#5155cb',
    950: '#000000',
  },
}

SCSS

$custom: #5155cb;
$custom-light: #8d85dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5155cb",
  "rgb": {
    "r": 81,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 238.033,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.51424,
    "c": 0.17924,
    "h": 276.6
  },
  "luminance": 0.12558
}

Semantic roles & 50–950 ramp

primary

#5155CB

secondary

#D5D4A3

accent

#D94ADD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5155CB

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

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