#5178C8#5178C8

#5178C8 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.2% C 0.131 H 263.3°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#5178C8
RGB	rgb(81, 120, 200)
HSL	hsl(220, 52%, 55%)
HSV	hsv(220, 60%, 78%)
CMYK	cmyk(59.5%, 40%, 0%, 21.6%)
CIE-LAB	lab(51.09, 10.80, -45.78)
CIE-LCH	lch(51.09, 47.03, 283.28°)
OKLab	oklab(58.19% -0.0153 -0.1301)
OKLCH	oklch(58.19% 0.131 263.3)
XYZ	xyz(20.5315, 19.3507, 57.2855)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178C8 #C8A151

analogous

#51B4C8 #5178C8 #6551C8

triadic

#5178C8 #C85178 #78C851

tetradic

#5178C8 #C851B4 #C8A151 #51C865

square

#5178C8 #C851B4 #C8A151 #51C865

split-complementary

#5178C8 #C86551 #B4C851

monochromatic

#264179 #355AA7 #5178C8 #809CD7 #AEC0E5

Accessibility & contrast

On white

4.31

#5178C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#5178C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178C8

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178C8	#FFFFFF	#000000	##000000
##5178C8	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5580CB

Deuteranopia (green-blind)

#4575C6

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5178c8;
/* rgb */ color: rgb(81, 120, 200);
/* oklch */ color: oklch(58.2% 0.131 263.3);

Tailwind

colors: {
  custom: {
    50: '#8b9ed9',
    500: '#5178c8',
    950: '#000000',
  },
}

SCSS

$custom: #5178c8;
$custom-light: #8b9ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#5178c8",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 200
  },
  "hsl": {
    "h": 220.336,
    "s": 51.965,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58192,
    "c": 0.13097,
    "h": 263.3
  },
  "luminance": 0.19352
}

Semantic roles & 50–950 ramp

primary

#5178C8

secondary

#D3C3A1

accent

#AD4CDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #5178C8

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

Preview Lab → · Contrast checker → · Palette generator →