#4288D7#4288D7

#4288D7 is a mid, vivid cyan. Relative luminance 0.237; OKLCH L 61.9% C 0.139 H 253.3°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#4288D7
RGB	rgb(66, 136, 215)
HSL	hsl(212, 65%, 55%)
HSV	hsv(212, 69%, 84%)
CMYK	cmyk(69.3%, 36.7%, 0%, 15.7%)
CIE-LAB	lab(55.76, 3.69, -46.91)
CIE-LCH	lch(55.76, 47.06, 274.49°)
OKLab	oklab(61.9% -0.04 -0.1334)
OKLCH	oklch(61.9% 0.139 253.3)
XYZ	xyz(23.3121, 23.6704, 67.6171)
Luminance	0.2367 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288D7 #D79142

analogous

#42D3D7 #4288D7 #4642D7

triadic

#4288D7 #D74288 #88D742

tetradic

#4288D7 #D742D3 #D79142 #42D746

square

#4288D7 #D742D3 #D79142 #42D746

split-complementary

#4288D7 #D74642 #D3D742

monochromatic

#1C4C83 #266AB5 #4288D7 #75A8E2 #A7C8EC

Accessibility & contrast

On white

3.66

#4288D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#4288D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288D7

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288D7	#FFFFFF	#000000	##000000
##4288D7	1.00	3.66	5.73	5.73
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#648DDA

Deuteranopia (green-blind)

#4E7FD5

Tritanopia (blue-blind)

#009AA5

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4288d7;
/* rgb */ color: rgb(66, 136, 215);
/* oklch */ color: oklch(61.9% 0.139 253.3);

Tailwind

colors: {
  custom: {
    50: '#87aae4',
    500: '#4288d7',
    950: '#000000',
  },
}

SCSS

$custom: #4288d7;
$custom-light: #87aae4;
$custom-dark: #000000;

JSON

{
  "hex": "#4288d7",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 215
  },
  "hsl": {
    "h": 211.812,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.61899,
    "c": 0.1393,
    "h": 253.3
  },
  "luminance": 0.23673
}

Semantic roles & 50–950 ramp

primary

#4288D7

secondary

#DABC9B

accent

#9940E8

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1015

muted

#7D7F84

Preview Lab

Preview with #4288D7

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

Preview Lab → · Contrast checker → · Palette generator →