#4287CA#4287CA

#4287CA is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 60.9% C 0.124 H 250.0°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#4287CA
RGB	rgb(66, 135, 202)
HSL	hsl(210, 56%, 53%)
HSV	hsv(210, 67%, 79%)
CMYK	cmyk(67.3%, 33.2%, 0%, 20.8%)
CIE-LAB	lab(54.81, -0.25, -41.07)
CIE-LCH	lch(54.81, 41.07, 269.64°)
OKLab	oklab(60.95% -0.0424 -0.1164)
OKLCH	oklch(60.95% 0.124 250)
XYZ	xyz(21.5674, 22.7482, 59.1199)
Luminance	0.2275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287CA #CA8542

analogous

#42CAC9 #4287CA #4243CA

triadic

#4287CA #CA4287 #87CA42

tetradic

#4287CA #C942CA #CA8542 #43CA42

square

#4287CA #C942CA #CA8542 #43CA42

split-complementary

#4287CA #CA4243 #CAC942

monochromatic

#204972 #2D68A2 #4287CA #72A5D7 #A2C4E5

Accessibility & contrast

On white

3.78

#4287CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#4287CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287CA

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287CA	#FFFFFF	#000000	##000000
##4287CA	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)

#698ACD

Deuteranopia (green-blind)

#567DC9

Tritanopia (blue-blind)

#00979F

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4287ca;
/* rgb */ color: rgb(66, 135, 202);
/* oklch */ color: oklch(60.9% 0.124 250.0);

Tailwind

colors: {
  custom: {
    50: '#85a9da',
    500: '#4287ca',
    950: '#000000',
  },
}

SCSS

$custom: #4287ca;
$custom-light: #85a9da;
$custom-dark: #000000;

JSON

{
  "hex": "#4287ca",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 202
  },
  "hsl": {
    "h": 209.559,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.60945,
    "c": 0.12387,
    "h": 250
  },
  "luminance": 0.2275
}

Semantic roles & 50–950 ramp

primary

#4287CA

secondary

#D1B396

accent

#9348DF

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287CA

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

Preview Lab → · Contrast checker → · Palette generator →