#5187FC#5187FC

#5187FC is a light, vivid blue. Relative luminance 0.261; OKLCH L 64.6% C 0.184 H 263.5°. Best body text is #000000 at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#5187FC
RGB	rgb(81, 135, 252)
HSL	hsl(221, 97%, 65%)
HSV	hsv(221, 68%, 99%)
CMYK	cmyk(67.9%, 46.4%, 0%, 1.2%)
CIE-LAB	lab(58.13, 19.45, -63.66)
CIE-LCH	lch(58.13, 66.57, 286.99°)
OKLab	oklab(64.57% -0.0208 -0.1824)
OKLCH	oklch(64.57% 0.184 263.5)
XYZ	xyz(29.6218, 26.1026, 95.5538)
Luminance	0.2611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187FC #FCC651

analogous

#51DCFC #5187FC #7151FC

triadic

#5187FC #FC5187 #87FC51

tetradic

#5187FC #FC51DC #FCC651 #51FC71

square

#5187FC #FC51DC #FCC651 #51FC71

split-complementary

#5187FC #FC7151 #DCFC51

monochromatic

#0444CF #155EFB #5187FC #8DB0FD #C9DAFE

Accessibility & contrast

On white

3.38

#5187FC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.22

#5187FC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187FC

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187FC	#FFFFFF	#000000	##000000
##5187FC	1.00	3.38	6.22	6.22
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.22	21.00	1.00	1.00
##000000	6.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A94FF

Deuteranopia (green-blind)

#2384FA

Tritanopia (blue-blind)

#00A2B5

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #5187fc;
/* rgb */ color: rgb(81, 135, 252);
/* oklch */ color: oklch(64.6% 0.184 263.5);

Tailwind

colors: {
  custom: {
    50: '#94a9fe',
    500: '#5187fc',
    950: '#000000',
  },
}

SCSS

$custom: #5187fc;
$custom-light: #94a9fe;
$custom-dark: #000000;

JSON

{
  "hex": "#5187fc",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 252
  },
  "hsl": {
    "h": 221.053,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.6457,
    "c": 0.18358,
    "h": 263.5
  },
  "luminance": 0.26106
}

Semantic roles & 50–950 ramp

primary

#5187FC

secondary

#F1DFB8

accent

#9D00E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F0F18

muted

#7E7F86

Preview Lab

Preview with #5187FC

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

Preview Lab → · Contrast checker → · Palette generator →