#5178CF#5178CF

#5178CF is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.141 H 264.3°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#5178CF
RGB	rgb(81, 120, 207)
HSL	hsl(221, 57%, 56%)
HSV	hsv(221, 61%, 81%)
CMYK	cmyk(60.9%, 42%, 0%, 18.8%)
CIE-LAB	lab(51.48, 13.17, -49.15)
CIE-LCH	lch(51.48, 50.89, 285.00°)
OKLab	oklab(58.61% -0.0139 -0.14)
OKLCH	oklch(58.61% 0.141 264.3)
XYZ	xyz(21.3684, 19.6854, 61.6930)
Luminance	0.1969 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178CF #CFA851

analogous

#51B7CF #5178CF #6951CF

triadic

#5178CF #CF5178 #78CF51

tetradic

#5178CF #CF51B7 #CFA851 #51CF69

square

#5178CF #CF51B7 #CFA851 #51CF69

split-complementary

#5178CF #CF6951 #B7CF51

monochromatic

#244182 #3159B2 #5178CF #819DDC #B1C2E9

Accessibility & contrast

On white

4.25

#5178CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#5178CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178CF

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178CF	#FFFFFF	#000000	##000000
##5178CF	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5181D2

Deuteranopia (green-blind)

#3F75CD

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5178cf;
/* rgb */ color: rgb(81, 120, 207);
/* oklch */ color: oklch(58.6% 0.141 264.3);

Tailwind

colors: {
  custom: {
    50: '#8c9ede',
    500: '#5178cf',
    950: '#000000',
  },
}

SCSS

$custom: #5178cf;
$custom-light: #8c9ede;
$custom-dark: #000000;

JSON

{
  "hex": "#5178cf",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 207
  },
  "hsl": {
    "h": 221.429,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.58614,
    "c": 0.14066,
    "h": 264.3
  },
  "luminance": 0.19687
}

Semantic roles & 50–950 ramp

primary

#5178CF

secondary

#D8C8A4

accent

#B148E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5178CF

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

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