#5166C3#5166C3

#5166C3 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.1% C 0.146 H 271.2°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#5166C3
RGB	rgb(81, 102, 195)
HSL	hsl(229, 49%, 54%)
HSV	hsv(229, 58%, 76%)
CMYK	cmyk(58.5%, 47.7%, 0%, 23.5%)
CIE-LAB	lab(45.89, 20.30, -51.21)
CIE-LCH	lch(45.89, 55.08, 291.63°)
OKLab	oklab(54.11% 0.0031 -0.1462)
OKLCH	oklch(54.11% 0.146 271.2)
XYZ	xyz(17.9918, 15.1908, 53.6032)
Luminance	0.1519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166C3 #C3AE51

analogous

#519FC3 #5166C3 #7551C3

triadic

#5166C3 #C35166 #66C351

tetradic

#5166C3 #C3519F #C3AE51 #51C375

square

#5166C3 #C3519F #C3AE51 #51C375

split-complementary

#5166C3 #C37551 #9FC351

monochromatic

#273572 #374AA0 #5166C3 #7F8ED3 #ACB6E2

Accessibility & contrast

On white

5.20

#5166C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#5166C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166C3

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166C3	#FFFFFF	#000000	##FFFFFF
##5166C3	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3972C6

Deuteranopia (green-blind)

#2768C1

Tritanopia (blue-blind)

#007B8B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #5166c3;
/* rgb */ color: rgb(81, 102, 195);
/* oklch */ color: oklch(54.1% 0.146 271.2);

Tailwind

colors: {
  custom: {
    50: '#8b91d6',
    500: '#5166c3',
    950: '#000000',
  },
}

SCSS

$custom: #5166c3;
$custom-light: #8b91d6;
$custom-dark: #000000;

JSON

{
  "hex": "#5166c3",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 195
  },
  "hsl": {
    "h": 228.947,
    "s": 48.718,
    "l": 54.118
  },
  "oklch": {
    "l": 0.54111,
    "c": 0.14624,
    "h": 271.2
  },
  "luminance": 0.15192
}

Semantic roles & 50–950 ramp

primary

#5166C3

secondary

#D0C7A0

accent

#BF50D8

background

#F9F8FD

surface

#F1F0FA

border

#CBCBD3

text

#0D0C14

muted

#7E7D83

Preview Lab

Preview with #5166C3

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

Preview Lab → · Contrast checker → · Palette generator →