#5166D7#5166D7

#5166D7 is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.5% C 0.174 H 271.7°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#5166D7
RGB	rgb(81, 102, 215)
HSL	hsl(231, 63%, 58%)
HSV	hsv(231, 62%, 84%)
CMYK	cmyk(62.3%, 52.6%, 0%, 15.7%)
CIE-LAB	lab(47.18, 27.07, -60.60)
CIE-LCH	lch(47.18, 66.38, 294.07°)
OKLab	oklab(55.5% 0.005 -0.1739)
OKLCH	oklch(55.5% 0.174 271.7)
XYZ	xyz(20.4064, 16.1566, 66.3200)
Luminance	0.1616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166D7 #D7C251

analogous

#51A9D7 #5166D7 #7F51D7

triadic

#5166D7 #D75166 #66D751

tetradic

#5166D7 #D751A9 #D7C251 #51D77F

square

#5166D7 #D751A9 #D7C251 #51D77F

split-complementary

#5166D7 #D77F51 #A9D751

monochromatic

#20318D #2C43BF #5166D7 #8392E2 #B5BEEE

Accessibility & contrast

On white

4.96

#5166D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#5166D7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166D7

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166D7	#FFFFFF	#000000	##FFFFFF
##5166D7	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E76DB

Deuteranopia (green-blind)

#006AD5

Tritanopia (blue-blind)

#008095

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #5166d7;
/* rgb */ color: rgb(81, 102, 215);
/* oklch */ color: oklch(55.5% 0.174 271.7);

Tailwind

colors: {
  custom: {
    50: '#8e91e4',
    500: '#5166d7',
    950: '#000000',
  },
}

SCSS

$custom: #5166d7;
$custom-light: #8e91e4;
$custom-dark: #000000;

JSON

{
  "hex": "#5166d7",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 215
  },
  "hsl": {
    "h": 230.597,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.55495,
    "c": 0.17393,
    "h": 271.7
  },
  "luminance": 0.16158
}

Semantic roles & 50–950 ramp

primary

#5166D7

secondary

#DDD4A7

accent

#CC42E6

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #5166D7

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

Preview Lab → · Contrast checker → · Palette generator →