#5187CB#5187CB

#5187CB is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.6% C 0.119 H 255.0°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#5187CB
RGB	rgb(81, 135, 203)
HSL	hsl(213, 54%, 56%)
HSV	hsv(213, 60%, 80%)
CMYK	cmyk(60.1%, 33.5%, 0%, 20.4%)
CIE-LAB	lab(55.47, 2.77, -40.56)
CIE-LCH	lch(55.47, 40.66, 273.90°)
OKLab	oklab(61.64% -0.0308 -0.1147)
OKLCH	oklch(61.64% 0.119 255)
XYZ	xyz(22.8330, 23.3870, 59.7992)
Luminance	0.2339 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5187CB #CB9551

analogous

#51C4CB #5187CB #5851CB

triadic

#5187CB #CB5187 #87CB51

tetradic

#5187CB #CB51C4 #CB9551 #51CB58

square

#5187CB #CB51C4 #CB9551 #51CB58

split-complementary

#5187CB #CB5851 #C4CB51

monochromatic

#254C7C #3368AC #5187CB #80A7D9 #AFC8E7

Accessibility & contrast

On white

3.70

#5187CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#5187CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5187CB

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5187CB	#FFFFFF	#000000	##000000
##5187CB	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A8BCE

Deuteranopia (green-blind)

#5A80CA

Tritanopia (blue-blind)

#0096A0

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #5187cb;
/* rgb */ color: rgb(81, 135, 203);
/* oklch */ color: oklch(61.6% 0.119 255.0);

Tailwind

colors: {
  custom: {
    50: '#8ca9db',
    500: '#5187cb',
    950: '#000000',
  },
}

SCSS

$custom: #5187cb;
$custom-light: #8ca9db;
$custom-dark: #000000;

JSON

{
  "hex": "#5187cb",
  "rgb": {
    "r": 81,
    "g": 135,
    "b": 203
  },
  "hsl": {
    "h": 213.443,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.61643,
    "c": 0.11875,
    "h": 255
  },
  "luminance": 0.23389
}

Semantic roles & 50–950 ramp

primary

#5187CB

secondary

#D5BFA3

accent

#9C4ADD

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5187CB

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

Preview Lab → · Contrast checker → · Palette generator →