#4287D0#4287D0

#4287D0 is a mid, vivid cyan. Relative luminance 0.230; OKLCH L 61.3% C 0.131 H 251.9°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#4287D0
RGB	rgb(66, 135, 208)
HSL	hsl(211, 60%, 54%)
HSV	hsv(211, 68%, 82%)
CMYK	cmyk(68.3%, 35.1%, 0%, 18.4%)
CIE-LAB	lab(55.11, 1.83, -43.99)
CIE-LCH	lch(55.11, 44.03, 272.38°)
OKLab	oklab(61.28% -0.0408 -0.1249)
OKLCH	oklch(61.28% 0.131 251.9)
XYZ	xyz(22.2917, 23.0379, 62.9342)
Luminance	0.2304 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287D0 #D08B42

analogous

#42CED0 #4287D0 #4442D0

triadic

#4287D0 #D04287 #87D042

tetradic

#4287D0 #D042CE #D08B42 #42D044

square

#4287D0 #D042CE #D08B42 #42D044

split-complementary

#4287D0 #D04442 #CED042

monochromatic

#1E4B79 #2A69AA #4287D0 #73A6DC #A4C5E8

Accessibility & contrast

On white

3.74

#4287D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#4287D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287D0

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287D0	#FFFFFF	#000000	##000000
##4287D0	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#668BD3

Deuteranopia (green-blind)

#527ECF

Tritanopia (blue-blind)

#0098A2

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4287d0;
/* rgb */ color: rgb(66, 135, 208);
/* oklch */ color: oklch(61.3% 0.131 251.9);

Tailwind

colors: {
  custom: {
    50: '#86a9df',
    500: '#4287d0',
    950: '#000000',
  },
}

SCSS

$custom: #4287d0;
$custom-light: #86a9df;
$custom-dark: #000000;

JSON

{
  "hex": "#4287d0",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 208
  },
  "hsl": {
    "h": 210.845,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.61277,
    "c": 0.1314,
    "h": 251.9
  },
  "luminance": 0.2304
}

Semantic roles & 50–950 ramp

primary

#4287D0

secondary

#D5B899

accent

#9644E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287D0

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

Preview Lab → · Contrast checker → · Palette generator →