#5166C9#5166C9

#5166C9 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.5% C 0.155 H 271.4°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#5166C9
RGB	rgb(81, 102, 201)
HSL	hsl(230, 53%, 55%)
HSV	hsv(230, 60%, 79%)
CMYK	cmyk(59.7%, 49.3%, 0%, 21.2%)
CIE-LAB	lab(46.27, 22.33, -54.06)
CIE-LCH	lch(46.27, 58.49, 292.44°)
OKLab	oklab(54.52% 0.0038 -0.1546)
OKLCH	oklch(54.52% 0.155 271.4)
XYZ	xyz(18.6838, 15.4676, 57.2480)
Luminance	0.1547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166C9 #C9B451

analogous

#51A2C9 #5166C9 #7851C9

triadic

#5166C9 #C95166 #66C951

tetradic

#5166C9 #C951A2 #C9B451 #51C978

square

#5166C9 #C951A2 #C9B451 #51C978

split-complementary

#5166C9 #C97851 #A2C951

monochromatic

#26347A #3449A9 #5166C9 #808FD7 #AEB8E6

Accessibility & contrast

On white

5.13

#5166C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#5166C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166C9

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166C9	#FFFFFF	#000000	##FFFFFF
##5166C9	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3373CD

Deuteranopia (green-blind)

#1C69C7

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #5166c9;
/* rgb */ color: rgb(81, 102, 201);
/* oklch */ color: oklch(54.5% 0.155 271.4);

Tailwind

colors: {
  custom: {
    50: '#8c91da',
    500: '#5166c9',
    950: '#000000',
  },
}

SCSS

$custom: #5166c9;
$custom-light: #8c91da;
$custom-dark: #000000;

JSON

{
  "hex": "#5166c9",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 201
  },
  "hsl": {
    "h": 229.5,
    "s": 52.632,
    "l": 55.294
  },
  "oklch": {
    "l": 0.54515,
    "c": 0.15466,
    "h": 271.4
  },
  "luminance": 0.15469
}

Semantic roles & 50–950 ramp

primary

#5166C9

secondary

#D4CBA2

accent

#C34CDC

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #5166C9

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

Preview Lab → · Contrast checker → · Palette generator →