#4288D2#4288D2

#4288D2 is a mid, vivid cyan. Relative luminance 0.234; OKLCH L 61.6% C 0.133 H 251.9°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#4288D2
RGB	rgb(66, 136, 210)
HSL	hsl(211, 62%, 54%)
HSV	hsv(211, 69%, 82%)
CMYK	cmyk(68.6%, 35.2%, 0%, 17.6%)
CIE-LAB	lab(55.50, 1.94, -44.51)
CIE-LCH	lch(55.50, 44.55, 272.49°)
OKLab	oklab(61.61% -0.0412 -0.1264)
OKLCH	oklch(61.61% 0.133 251.9)
XYZ	xyz(22.6795, 23.4173, 64.2850)
Luminance	0.2342 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288D2 #D28C42

analogous

#42D0D2 #4288D2 #4442D2

triadic

#4288D2 #D24288 #88D242

tetradic

#4288D2 #D242D0 #D28C42 #42D244

square

#4288D2 #D242D0 #D28C42 #42D244

split-complementary

#4288D2 #D24442 #D0D242

monochromatic

#1E4B7C #296AAD #4288D2 #73A7DE #A5C6EA

Accessibility & contrast

On white

3.69

#4288D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#4288D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288D2

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288D2	#FFFFFF	#000000	##000000
##4288D2	1.00	3.69	5.68	5.68
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#678CD5

Deuteranopia (green-blind)

#527FD1

Tritanopia (blue-blind)

#0099A3

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4288d2;
/* rgb */ color: rgb(66, 136, 210);
/* oklch */ color: oklch(61.6% 0.133 251.9);

Tailwind

colors: {
  custom: {
    50: '#86aae0',
    500: '#4288d2',
    950: '#000000',
  },
}

SCSS

$custom: #4288d2;
$custom-light: #86aae0;
$custom-dark: #000000;

JSON

{
  "hex": "#4288d2",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 210
  },
  "hsl": {
    "h": 210.833,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.61615,
    "c": 0.13295,
    "h": 251.9
  },
  "luminance": 0.2342
}

Semantic roles & 50–950 ramp

primary

#4288D2

secondary

#D7B999

accent

#9643E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4288D2

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

Preview Lab → · Contrast checker → · Palette generator →