#5178E8#5178E8

#5178E8 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 60.2% C 0.175 H 266.7°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#5178E8
RGB	rgb(81, 120, 232)
HSL	hsl(225, 77%, 61%)
HSV	hsv(225, 65%, 91%)
CMYK	cmyk(65.1%, 48.3%, 0%, 9%)
CIE-LAB	lab(52.96, 21.72, -60.89)
CIE-LCH	lch(52.96, 64.65, 289.63°)
OKLab	oklab(60.22% -0.01 -0.1745)
OKLCH	oklch(60.22% 0.175 266.7)
XYZ	xyz(24.6703, 21.0062, 79.0828)
Luminance	0.2101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178E8 #E8C151

analogous

#51C4E8 #5178E8 #7651E8

triadic

#5178E8 #E85178 #78E851

tetradic

#5178E8 #E851C4 #E8C151 #51E876

square

#5178E8 #E851C4 #E8C151 #51E876

split-complementary

#5178E8 #E87651 #C4E851

monochromatic

#163CA8 #1D4FDE #5178E8 #87A2EF #BDCCF6

Accessibility & contrast

On white

4.04

#5178E8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#5178E8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178E8

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178E8	#FFFFFF	#000000	##000000
##5178E8	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C86EC

Deuteranopia (green-blind)

#1678E6

Tritanopia (blue-blind)

#0092A5

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #5178e8;
/* rgb */ color: rgb(81, 120, 232);
/* oklch */ color: oklch(60.2% 0.175 266.7);

Tailwind

colors: {
  custom: {
    50: '#919ef0',
    500: '#5178e8',
    950: '#000000',
  },
}

SCSS

$custom: #5178e8;
$custom-light: #919ef0;
$custom-dark: #000000;

JSON

{
  "hex": "#5178e8",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 232
  },
  "hsl": {
    "h": 224.503,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.60222,
    "c": 0.17475,
    "h": 266.7
  },
  "luminance": 0.21008
}

Semantic roles & 50–950 ramp

primary

#5178E8

secondary

#E7D8AE

accent

#A40DD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #5178E8

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

Preview Lab → · Contrast checker → · Palette generator →