#4289D2#4289D2

#4289D2 is a mid, vivid cyan. Relative luminance 0.237; OKLCH L 61.8% C 0.132 H 251.3°. Best body text is #000000 at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#4289D2
RGB	rgb(66, 137, 210)
HSL	hsl(210, 62%, 54%)
HSV	hsv(210, 69%, 82%)
CMYK	cmyk(68.6%, 34.8%, 0%, 17.6%)
CIE-LAB	lab(55.79, 1.34, -44.05)
CIE-LCH	lch(55.79, 44.07, 271.75°)
OKLab	oklab(61.84% -0.0422 -0.125)
OKLCH	oklch(61.84% 0.132 251.3)
XYZ	xyz(22.8210, 23.7003, 64.3322)
Luminance	0.2370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289D2 #D28B42

analogous

#42D1D2 #4289D2 #4342D2

triadic

#4289D2 #D24289 #89D242

tetradic

#4289D2 #D242D1 #D28B42 #42D243

square

#4289D2 #D242D1 #D28B42 #42D243

split-complementary

#4289D2 #D24342 #D1D242

monochromatic

#1E4C7C #296AAD #4289D2 #73A8DE #A5C7EA

Accessibility & contrast

On white

3.66

#4289D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.74

#4289D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289D2

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289D2	#FFFFFF	#000000	##000000
##4289D2	1.00	3.66	5.74	5.74
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.74	21.00	1.00	1.00
##000000	5.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#688DD5

Deuteranopia (green-blind)

#5480D1

Tritanopia (blue-blind)

#009AA4

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4289d2;
/* rgb */ color: rgb(66, 137, 210);
/* oklch */ color: oklch(61.8% 0.132 251.3);

Tailwind

colors: {
  custom: {
    50: '#86abe0',
    500: '#4289d2',
    950: '#000000',
  },
}

SCSS

$custom: #4289d2;
$custom-light: #86abe0;
$custom-dark: #000000;

JSON

{
  "hex": "#4289d2",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 210
  },
  "hsl": {
    "h": 210.417,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.61839,
    "c": 0.13199,
    "h": 251.3
  },
  "luminance": 0.23703
}

Semantic roles & 50–950 ramp

primary

#4289D2

secondary

#D7B899

accent

#9543E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4289D2

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

Preview Lab → · Contrast checker → · Palette generator →