#5178E7#5178E7

#5178E7 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 60.2% C 0.173 H 266.6°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#5178E7
RGB	rgb(81, 120, 231)
HSL	hsl(224, 76%, 61%)
HSV	hsv(224, 65%, 91%)
CMYK	cmyk(64.9%, 48.1%, 0%, 9.4%)
CIE-LAB	lab(52.89, 21.38, -60.43)
CIE-LCH	lch(52.89, 64.10, 289.48°)
OKLab	oklab(60.16% -0.0102 -0.1731)
OKLCH	oklch(60.16% 0.173 266.6)
XYZ	xyz(24.5286, 20.9495, 78.3368)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178E7 #E7C051

analogous

#51C3E7 #5178E7 #7551E7

triadic

#5178E7 #E75178 #78E751

tetradic

#5178E7 #E751C3 #E7C051 #51E775

square

#5178E7 #E751C3 #E7C051 #51E775

split-complementary

#5178E7 #E77551 #C3E751

monochromatic

#173CA7 #1E50DC #5178E7 #87A2EE #BDCBF6

Accessibility & contrast

On white

4.05

#5178E7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#5178E7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178E7

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178E7	#FFFFFF	#000000	##000000
##5178E7	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D85EB

Deuteranopia (green-blind)

#1978E5

Tritanopia (blue-blind)

#0092A4

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #5178e7;
/* rgb */ color: rgb(81, 120, 231);
/* oklch */ color: oklch(60.2% 0.173 266.6);

Tailwind

colors: {
  custom: {
    50: '#909eef',
    500: '#5178e7',
    950: '#000000',
  },
}

SCSS

$custom: #5178e7;
$custom-light: #909eef;
$custom-dark: #000000;

JSON

{
  "hex": "#5178e7",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 231
  },
  "hsl": {
    "h": 224.4,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.60155,
    "c": 0.1734,
    "h": 266.6
  },
  "luminance": 0.20952
}

Semantic roles & 50–950 ramp

primary

#5178E7

secondary

#E6D7AE

accent

#A30ED8

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #5178E7

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

Preview Lab → · Contrast checker → · Palette generator →