#4288C4#4288C4

#4288C4 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.9% C 0.116 H 247.0°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#4288C4
RGB	rgb(66, 136, 196)
HSL	hsl(208, 52%, 51%)
HSV	hsv(208, 66%, 77%)
CMYK	cmyk(66.3%, 30.6%, 0%, 23.1%)
CIE-LAB	lab(54.81, -2.91, -37.67)
CIE-LCH	lch(54.81, 37.78, 265.59°)
OKLab	oklab(60.85% -0.0452 -0.1064)
OKLCH	oklch(60.85% 0.116 247)
XYZ	xyz(21.0110, 22.7499, 55.4977)
Luminance	0.2275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288C4 #C47E42

analogous

#42C4BF #4288C4 #4247C4

triadic

#4288C4 #C44288 #88C442

tetradic

#4288C4 #BF42C4 #C47E42 #47C442

square

#4288C4 #BF42C4 #C47E42 #47C442

split-complementary

#4288C4 #C44247 #C4BF42

monochromatic

#21496A #306899 #4288C4 #71A5D3 #9FC3E1

Accessibility & contrast

On white

3.78

#4288C4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#4288C4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288C4

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288C4	#FFFFFF	#000000	##000000
##4288C4	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D8AC7

Deuteranopia (green-blind)

#5C7EC3

Tritanopia (blue-blind)

#00969D

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4288c4;
/* rgb */ color: rgb(66, 136, 196);
/* oklch */ color: oklch(60.9% 0.116 247.0);

Tailwind

colors: {
  custom: {
    50: '#84aad6',
    500: '#4288c4',
    950: '#000000',
  },
}

SCSS

$custom: #4288c4;
$custom-light: #84aad6;
$custom-dark: #000000;

JSON

{
  "hex": "#4288c4",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 196
  },
  "hsl": {
    "h": 207.692,
    "s": 52.419,
    "l": 51.373
  },
  "oklch": {
    "l": 0.60851,
    "c": 0.11564,
    "h": 247
  },
  "luminance": 0.22752
}

Semantic roles & 50–950 ramp

primary

#4288C4

secondary

#CEAF94

accent

#8E4CDC

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #4288C4

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

Preview Lab → · Contrast checker → · Palette generator →