#4288DC#4288DC

#4288DC is a light, vivid cyan. Relative luminance 0.239; OKLCH L 62.2% C 0.146 H 254.6°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#4288DC
RGB	rgb(66, 136, 220)
HSL	hsl(213, 69%, 56%)
HSV	hsv(213, 70%, 86%)
CMYK	cmyk(70%, 38.2%, 0%, 13.7%)
CIE-LAB	lab(56.02, 5.45, -49.30)
CIE-LCH	lch(56.02, 49.60, 276.30°)
OKLab	oklab(62.19% -0.0388 -0.1404)
OKLCH	oklch(62.19% 0.146 254.6)
XYZ	xyz(23.9644, 23.9313, 71.0525)
Luminance	0.2393 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288DC #DC9642

analogous

#42D5DC #4288DC #4942DC

triadic

#4288DC #DC4288 #88DC42

tetradic

#4288DC #DC42D5 #DC9642 #42DC49

square

#4288DC #DC42D5 #DC9642 #42DC49

split-complementary

#4288DC #DC4942 #D5DC42

monochromatic

#1A4D8A #2369BE #4288DC #76A9E6 #A9C9EF

Accessibility & contrast

On white

3.63

#4288DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#4288DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288DC

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288DC	#FFFFFF	#000000	##000000
##4288DC	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#618EDF

Deuteranopia (green-blind)

#4A80DA

Tritanopia (blue-blind)

#009CA7

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4288dc;
/* rgb */ color: rgb(66, 136, 220);
/* oklch */ color: oklch(62.2% 0.146 254.6);

Tailwind

colors: {
  custom: {
    50: '#88aae7',
    500: '#4288dc',
    950: '#000000',
  },
}

SCSS

$custom: #4288dc;
$custom-light: #88aae7;
$custom-dark: #000000;

JSON

{
  "hex": "#4288dc",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 220
  },
  "hsl": {
    "h": 212.727,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.6219,
    "c": 0.14569,
    "h": 254.6
  },
  "luminance": 0.23934
}

Semantic roles & 50–950 ramp

primary

#4288DC

secondary

#DDC09D

accent

#9C3CEC

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4288DC

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

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