#5178E9#5178E9

#5178E9 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.3% C 0.176 H 266.8°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#5178E9
RGB	rgb(81, 120, 233)
HSL	hsl(225, 78%, 62%)
HSV	hsv(225, 65%, 91%)
CMYK	cmyk(65.2%, 48.5%, 0%, 8.6%)
CIE-LAB	lab(53.02, 22.06, -61.35)
CIE-LCH	lch(53.02, 65.19, 289.78°)
OKLab	oklab(60.29% -0.0099 -0.1758)
OKLCH	oklch(60.29% 0.176 266.8)
XYZ	xyz(24.8127, 21.0631, 79.8330)
Luminance	0.2107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178E9 #E9C251

analogous

#51C4E9 #5178E9 #7651E9

triadic

#5178E9 #E95178 #78E951

tetradic

#5178E9 #E951C4 #E9C251 #51E976

square

#5178E9 #E951C4 #E9C251 #51E976

split-complementary

#5178E9 #E97651 #C4E951

monochromatic

#163CAA #1C4FE0 #5178E9 #87A2F0 #BECCF7

Accessibility & contrast

On white

4.03

#5178E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#5178E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178E9

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178E9	#FFFFFF	#000000	##000000
##5178E9	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B86ED

Deuteranopia (green-blind)

#1278E7

Tritanopia (blue-blind)

#0092A5

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #5178e9;
/* rgb */ color: rgb(81, 120, 233);
/* oklch */ color: oklch(60.3% 0.176 266.8);

Tailwind

colors: {
  custom: {
    50: '#919ef1',
    500: '#5178e9',
    950: '#000000',
  },
}

SCSS

$custom: #5178e9;
$custom-light: #919ef1;
$custom-dark: #000000;

JSON

{
  "hex": "#5178e9",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 233
  },
  "hsl": {
    "h": 224.605,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.60289,
    "c": 0.17609,
    "h": 266.8
  },
  "luminance": 0.21065
}

Semantic roles & 50–950 ramp

primary

#5178E9

secondary

#E7D9AF

accent

#A50CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #5178E9

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

Preview Lab → · Contrast checker → · Palette generator →