#4288DE#4288DE

#4288DE is a light, vivid cyan. Relative luminance 0.240; OKLCH L 62.3% C 0.148 H 255.0°. Best body text is #000000 at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#4288DE
RGB	rgb(66, 136, 222)
HSL	hsl(213, 70%, 56%)
HSV	hsv(213, 70%, 87%)
CMYK	cmyk(70.3%, 38.7%, 0%, 12.9%)
CIE-LAB	lab(56.13, 6.15, -50.25)
CIE-LCH	lch(56.13, 50.63, 276.98°)
OKLab	oklab(62.31% -0.0383 -0.1432)
OKLCH	oklch(62.31% 0.148 255)
XYZ	xyz(24.2309, 24.0379, 72.4558)
Luminance	0.2404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288DE #DE9842

analogous

#42D6DE #4288DE #4A42DE

triadic

#4288DE #DE4288 #88DE42

tetradic

#4288DE #DE42D6 #DE9842 #42DE4A

square

#4288DE #DE42D6 #DE9842 #42DE4A

split-complementary

#4288DE #DE4A42 #D6DE42

monochromatic

#194D8D #2269C1 #4288DE #76A9E7 #AACAF0

Accessibility & contrast

On white

3.62

#4288DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.81

#4288DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288DE

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288DE	#FFFFFF	#000000	##000000
##4288DE	1.00	3.62	5.81	5.81
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.81	21.00	1.00	1.00
##000000	5.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#608EE1

Deuteranopia (green-blind)

#4880DC

Tritanopia (blue-blind)

#009CA8

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #4288de;
/* rgb */ color: rgb(66, 136, 222);
/* oklch */ color: oklch(62.3% 0.148 255.0);

Tailwind

colors: {
  custom: {
    50: '#88aae9',
    500: '#4288de',
    950: '#000000',
  },
}

SCSS

$custom: #4288de;
$custom-light: #88aae9;
$custom-dark: #000000;

JSON

{
  "hex": "#4288de",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 222
  },
  "hsl": {
    "h": 213.077,
    "s": 70.27,
    "l": 56.471
  },
  "oklch": {
    "l": 0.62308,
    "c": 0.14826,
    "h": 255
  },
  "luminance": 0.2404
}

Semantic roles & 50–950 ramp

primary

#4288DE

secondary

#DEC19E

accent

#9D3BED

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4288DE

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

Preview Lab → · Contrast checker → · Palette generator →