#5178CA#5178CA

#5178CA is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.3% C 0.134 H 263.6°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#5178CA
RGB	rgb(81, 120, 202)
HSL	hsl(221, 53%, 55%)
HSV	hsv(221, 60%, 79%)
CMYK	cmyk(59.9%, 40.6%, 0%, 20.8%)
CIE-LAB	lab(51.20, 11.48, -46.74)
CIE-LCH	lch(51.20, 48.13, 283.80°)
OKLab	oklab(58.31% -0.0149 -0.1329)
OKLCH	oklch(58.31% 0.134 263.6)
XYZ	xyz(20.7668, 19.4448, 58.5245)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178CA #CAA351

analogous

#51B5CA #5178CA #6651CA

triadic

#5178CA #CA5178 #78CA51

tetradic

#5178CA #CA51B5 #CAA351 #51CA66

square

#5178CA #CA51B5 #CAA351 #51CA66

split-complementary

#5178CA #CA6651 #B5CA51

monochromatic

#25417B #345AAA #5178CA #809CD8 #AFC1E7

Accessibility & contrast

On white

4.30

#5178CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#5178CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178CA

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178CA	#FFFFFF	#000000	##000000
##5178CA	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5480CD

Deuteranopia (green-blind)

#4475C8

Tritanopia (blue-blind)

#008A97

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #5178ca;
/* rgb */ color: rgb(81, 120, 202);
/* oklch */ color: oklch(58.3% 0.134 263.6);

Tailwind

colors: {
  custom: {
    50: '#8c9eda',
    500: '#5178ca',
    950: '#000000',
  },
}

SCSS

$custom: #5178ca;
$custom-light: #8c9eda;
$custom-dark: #000000;

JSON

{
  "hex": "#5178ca",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 202
  },
  "hsl": {
    "h": 220.661,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58312,
    "c": 0.13374,
    "h": 263.6
  },
  "luminance": 0.19447
}

Semantic roles & 50–950 ramp

primary

#5178CA

secondary

#D5C4A2

accent

#AE4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5178CA

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

Preview Lab → · Contrast checker → · Palette generator →