#5187E1#5187E1

#5187E1 is a light, vivid blue. Relative luminance 0.245; OKLCH L 62.9% C 0.148 H 260.0°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#5187E1
RGB	rgb(81, 135, 225)
HSL	hsl(218, 71%, 60%)
HSV	hsv(218, 64%, 88%)
CMYK	cmyk(64%, 40%, 0%, 11.8%)
CIE-LAB	lab(56.60, 10.17, -51.15)
CIE-LCH	lch(56.60, 52.15, 281.24°)
OKLab	oklab(62.89% -0.0255 -0.1456)
OKLCH	oklch(62.89% 0.148 260)
XYZ	xyz(25.6431, 24.5111, 74.5993)
Luminance	0.2451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187E1 #E1AB51

analogous

#51CFE1 #5187E1 #6351E1

triadic

#5187E1 #E15187 #87E151

tetradic

#5187E1 #E151CF #E1AB51 #51E163

square

#5187E1 #E151CF #E1AB51 #51E163

split-complementary

#5187E1 #E16351 #CFE151

monochromatic

#1B4C9D #2465D1 #5187E1 #85ABEA #B9CFF3

Accessibility & contrast

On white

3.56

#5187E1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#5187E1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187E1

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187E1	#FFFFFF	#000000	##000000
##5187E1	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F8FE5

Deuteranopia (green-blind)

#4982DF

Tritanopia (blue-blind)

#009CA9

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #5187e1;
/* rgb */ color: rgb(81, 135, 225);
/* oklch */ color: oklch(62.9% 0.148 260.0);

Tailwind

colors: {
  custom: {
    50: '#8fa9eb',
    500: '#5187e1',
    950: '#000000',
  },
}

SCSS

$custom: #5187e1;
$custom-light: #8fa9eb;
$custom-dark: #000000;

JSON

{
  "hex": "#5187e1",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 225
  },
  "hsl": {
    "h": 217.5,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.62888,
    "c": 0.14786,
    "h": 260
  },
  "luminance": 0.24514
}

Semantic roles & 50–950 ramp

primary

#5187E1

secondary

#E3CEAB

accent

#AA3AED

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5187E1

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

Preview Lab → · Contrast checker → · Palette generator →