#5187E5#5187E5

#5187E5 is a light, vivid blue. Relative luminance 0.247; OKLCH L 63.1% C 0.153 H 260.7°. Best body text is #000000 at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#5187E5
RGB	rgb(81, 135, 229)
HSL	hsl(218, 74%, 61%)
HSV	hsv(218, 65%, 90%)
CMYK	cmyk(64.6%, 41%, 0%, 10.2%)
CIE-LAB	lab(56.81, 11.53, -53.04)
CIE-LCH	lch(56.81, 54.28, 282.27°)
OKLab	oklab(63.13% -0.0247 -0.1512)
OKLCH	oklch(63.13% 0.153 260.7)
XYZ	xyz(26.1952, 24.7319, 77.5068)
Luminance	0.2473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187E5 #E5AF51

analogous

#51D1E5 #5187E5 #6551E5

triadic

#5187E5 #E55187 #87E551

tetradic

#5187E5 #E551D1 #E5AF51 #51E565

square

#5187E5 #E551D1 #E5AF51 #51E565

split-complementary

#5187E5 #E56551 #D1E551

monochromatic

#184BA3 #2064D8 #5187E5 #86ACED #BBD0F5

Accessibility & contrast

On white

3.53

#5187E5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.95

#5187E5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187E5

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187E5	#FFFFFF	#000000	##000000
##5187E5	1.00	3.53	5.95	5.95
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.95	21.00	1.00	1.00
##000000	5.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C90E9

Deuteranopia (green-blind)

#4582E3

Tritanopia (blue-blind)

#009CAB

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #5187e5;
/* rgb */ color: rgb(81, 135, 229);
/* oklch */ color: oklch(63.1% 0.153 260.7);

Tailwind

colors: {
  custom: {
    50: '#90a9ee',
    500: '#5187e5',
    950: '#000000',
  },
}

SCSS

$custom: #5187e5;
$custom-light: #90a9ee;
$custom-dark: #000000;

JSON

{
  "hex": "#5187e5",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 229
  },
  "hsl": {
    "h": 218.108,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.63127,
    "c": 0.15318,
    "h": 260.7
  },
  "luminance": 0.24734
}

Semantic roles & 50–950 ramp

primary

#5187E5

secondary

#E5D0AD

accent

#8E0FD6

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5187E5

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

Preview Lab → · Contrast checker → · Palette generator →