#5178E5#5178E5

#5178E5 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 60.0% C 0.171 H 266.5°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#5178E5
RGB	rgb(81, 120, 229)
HSL	hsl(224, 74%, 61%)
HSV	hsv(224, 65%, 90%)
CMYK	cmyk(64.6%, 47.6%, 0%, 10.2%)
CIE-LAB	lab(52.77, 20.69, -59.51)
CIE-LCH	lch(52.77, 63.00, 289.17°)
OKLab	oklab(60.02% -0.0104 -0.1704)
OKLCH	oklch(60.02% 0.171 266.5)
XYZ	xyz(24.2478, 20.8372, 76.8577)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178E5 #E5BE51

analogous

#51C2E5 #5178E5 #7451E5

triadic

#5178E5 #E55178 #78E551

tetradic

#5178E5 #E551C2 #E5BE51 #51E574

square

#5178E5 #E551C2 #E5BE51 #51E574

split-complementary

#5178E5 #E57451 #C2E551

monochromatic

#183DA3 #2051D8 #5178E5 #86A1ED #BBCBF5

Accessibility & contrast

On white

4.06

#5178E5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#5178E5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178E5

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178E5	#FFFFFF	#000000	##000000
##5178E5	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F85E9

Deuteranopia (green-blind)

#1E78E3

Tritanopia (blue-blind)

#0091A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #5178e5;
/* rgb */ color: rgb(81, 120, 229);
/* oklch */ color: oklch(60.0% 0.171 266.5);

Tailwind

colors: {
  custom: {
    50: '#909eee',
    500: '#5178e5',
    950: '#000000',
  },
}

SCSS

$custom: #5178e5;
$custom-light: #909eee;
$custom-dark: #000000;

JSON

{
  "hex": "#5178e5",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 229
  },
  "hsl": {
    "h": 224.189,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.60021,
    "c": 0.17071,
    "h": 266.5
  },
  "luminance": 0.20839
}

Semantic roles & 50–950 ramp

primary

#5178E5

secondary

#E5D6AD

accent

#A20FD6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #5178E5

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

Preview Lab → · Contrast checker → · Palette generator →