#5178CD#5178CD

#5178CD is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.138 H 264.0°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#5178CD
RGB	rgb(81, 120, 205)
HSL	hsl(221, 55%, 56%)
HSV	hsv(221, 60%, 80%)
CMYK	cmyk(60.5%, 41.5%, 0%, 19.6%)
CIE-LAB	lab(51.37, 12.49, -48.19)
CIE-LCH	lch(51.37, 49.78, 284.53°)
OKLab	oklab(58.49% -0.0143 -0.1371)
OKLCH	oklch(58.49% 0.138 264)
XYZ	xyz(21.1255, 19.5882, 60.4134)
Luminance	0.1959 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178CD #CDA651

analogous

#51B6CD #5178CD #6851CD

triadic

#5178CD #CD5178 #78CD51

tetradic

#5178CD #CD51B6 #CDA651 #51CD68

square

#5178CD #CD51B6 #CDA651 #51CD68

split-complementary

#5178CD #CD6851 #B6CD51

monochromatic

#25417F #3259AF #5178CD #819DDB #B0C2E8

Accessibility & contrast

On white

4.27

#5178CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#5178CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178CD

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178CD	#FFFFFF	#000000	##000000
##5178CD	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280D0

Deuteranopia (green-blind)

#4175CB

Tritanopia (blue-blind)

#008B98

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5178cd;
/* rgb */ color: rgb(81, 120, 205);
/* oklch */ color: oklch(58.5% 0.138 264.0);

Tailwind

colors: {
  custom: {
    50: '#8c9edd',
    500: '#5178cd',
    950: '#000000',
  },
}

SCSS

$custom: #5178cd;
$custom-light: #8c9edd;
$custom-dark: #000000;

JSON

{
  "hex": "#5178cd",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 205
  },
  "hsl": {
    "h": 221.129,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.58493,
    "c": 0.1379,
    "h": 264
  },
  "luminance": 0.1959
}

Semantic roles & 50–950 ramp

primary

#5178CD

secondary

#D7C6A3

accent

#B049DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5178CD

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

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