#5166DA#5166DA

#5166DA is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.7% C 0.178 H 271.7°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#5166DA
RGB	rgb(81, 102, 218)
HSL	hsl(231, 65%, 59%)
HSV	hsv(231, 63%, 85%)
CMYK	cmyk(62.8%, 53.2%, 0%, 14.5%)
CIE-LAB	lab(47.38, 28.09, -61.98)
CIE-LCH	lch(47.38, 68.05, 294.38°)
OKLab	oklab(55.71% 0.0052 -0.1779)
OKLCH	oklch(55.71% 0.178 271.7)
XYZ	xyz(20.7954, 16.3122, 68.3688)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166DA #DAC551

analogous

#51AADA #5166DA #8051DA

triadic

#5166DA #DA5166 #66DA51

tetradic

#5166DA #DA51AA #DAC551 #51DA80

square

#5166DA #DA51AA #DAC551 #51DA80

split-complementary

#5166DA #DA8051 #AADA51

monochromatic

#1F3192 #2A41C4 #5166DA #8392E5 #B6BFEF

Accessibility & contrast

On white

4.93

#5166DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#5166DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166DA

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166DA	#FFFFFF	#000000	##FFFFFF
##5166DA	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1777DE

Deuteranopia (green-blind)

#006BD8

Tritanopia (blue-blind)

#008196

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #5166da;
/* rgb */ color: rgb(81, 102, 218);
/* oklch */ color: oklch(55.7% 0.178 271.7);

Tailwind

colors: {
  custom: {
    50: '#8f91e6',
    500: '#5166da',
    950: '#000000',
  },
}

SCSS

$custom: #5166da;
$custom-light: #8f91e6;
$custom-dark: #000000;

JSON

{
  "hex": "#5166da",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 218
  },
  "hsl": {
    "h": 230.803,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.55711,
    "c": 0.178,
    "h": 271.7
  },
  "luminance": 0.16314
}

Semantic roles & 50–950 ramp

primary

#5166DA

secondary

#DED6A8

accent

#CE40E8

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5166DA

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

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