#5178E4#5178E4

#5178E4 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 60.0% C 0.169 H 266.4°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#5178E4
RGB	rgb(81, 120, 228)
HSL	hsl(224, 73%, 61%)
HSV	hsv(224, 64%, 89%)
CMYK	cmyk(64.5%, 47.4%, 0%, 10.6%)
CIE-LAB	lab(52.71, 20.34, -59.04)
CIE-LCH	lch(52.71, 62.45, 289.01°)
OKLab	oklab(59.95% -0.0106 -0.169)
OKLCH	oklch(59.95% 0.169 266.4)
XYZ	xyz(24.1086, 20.7815, 76.1245)
Luminance	0.2078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178E4 #E4BD51

analogous

#51C1E4 #5178E4 #7451E4

triadic

#5178E4 #E45178 #78E451

tetradic

#5178E4 #E451C1 #E4BD51 #51E474

square

#5178E4 #E451C1 #E4BD51 #51E474

split-complementary

#5178E4 #E47451 #C1E451

monochromatic

#193DA2 #2151D7 #5178E4 #86A1EC #BBCAF4

Accessibility & contrast

On white

4.07

#5178E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#5178E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178E4

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178E4	#FFFFFF	#000000	##000000
##5178E4	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4085E8

Deuteranopia (green-blind)

#2177E2

Tritanopia (blue-blind)

#0091A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #5178e4;
/* rgb */ color: rgb(81, 120, 228);
/* oklch */ color: oklch(60.0% 0.169 266.4);

Tailwind

colors: {
  custom: {
    50: '#909eed',
    500: '#5178e4',
    950: '#000000',
  },
}

SCSS

$custom: #5178e4;
$custom-light: #909eed;
$custom-dark: #000000;

JSON

{
  "hex": "#5178e4",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 228
  },
  "hsl": {
    "h": 224.082,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.59954,
    "c": 0.16936,
    "h": 266.4
  },
  "luminance": 0.20784
}

Semantic roles & 50–950 ramp

primary

#5178E4

secondary

#E4D6AC

accent

#A110D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #5178E4

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

Preview Lab → · Contrast checker → · Palette generator →