#5188E4#5188E4

#5188E4 is a light, vivid blue. Relative luminance 0.250; OKLCH L 63.3% C 0.151 H 260.1°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#5188E4
RGB	rgb(81, 136, 228)
HSL	hsl(218, 73%, 61%)
HSV	hsv(218, 64%, 89%)
CMYK	cmyk(64.5%, 40.4%, 0%, 10.6%)
CIE-LAB	lab(57.03, 10.59, -52.13)
CIE-LCH	lch(57.03, 53.19, 281.48°)
OKLab	oklab(63.28% -0.0259 -0.1485)
OKLCH	oklch(63.28% 0.151 260.1)
XYZ	xyz(26.1961, 24.9566, 76.8203)
Luminance	0.2496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5188E4 #E4AD51

analogous

#51D1E4 #5188E4 #6351E4

triadic

#5188E4 #E45188 #88E451

tetradic

#5188E4 #E451D1 #E4AD51 #51E463

square

#5188E4 #E451D1 #E4AD51 #51E463

split-complementary

#5188E4 #E46351 #D1E451

monochromatic

#194CA2 #2165D7 #5188E4 #86ACEC #BBD0F4

Accessibility & contrast

On white

3.50

#5188E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#5188E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5188E4

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5188E4	#FFFFFF	#000000	##000000
##5188E4	1.00	3.50	5.99	5.99
#FFFFFF	3.50	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E90E8

Deuteranopia (green-blind)

#4883E2

Tritanopia (blue-blind)

#009DAB

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #5188e4;
/* rgb */ color: rgb(81, 136, 228);
/* oklch */ color: oklch(63.3% 0.151 260.1);

Tailwind

colors: {
  custom: {
    50: '#8faaed',
    500: '#5188e4',
    950: '#000000',
  },
}

SCSS

$custom: #5188e4;
$custom-light: #8faaed;
$custom-dark: #000000;

JSON

{
  "hex": "#5188e4",
  "rgb": {
    "r": 81,
    "g": 136,
    "b": 228
  },
  "hsl": {
    "h": 217.551,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.63279,
    "c": 0.15073,
    "h": 260.1
  },
  "luminance": 0.24959
}

Semantic roles & 50–950 ramp

primary

#5188E4

secondary

#E4CFAC

accent

#8C10D5

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5188E4

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

Preview Lab → · Contrast checker → · Palette generator →