#4287DA#4287DA

#4287DA is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.9% C 0.144 H 254.6°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#4287DA
RGB	rgb(66, 135, 218)
HSL	hsl(213, 67%, 56%)
HSV	hsv(213, 70%, 85%)
CMYK	cmyk(69.7%, 38.1%, 0%, 14.5%)
CIE-LAB	lab(55.63, 5.34, -48.80)
CIE-LCH	lch(55.63, 49.09, 276.25°)
OKLab	oklab(61.85% -0.0383 -0.139)
OKLCH	oklch(61.85% 0.144 254.6)
XYZ	xyz(23.5610, 23.5456, 69.6191)
Luminance	0.2355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287DA #DA9542

analogous

#42D3DA #4287DA #4942DA

triadic

#4287DA #DA4287 #87DA42

tetradic

#4287DA #DA42D3 #DA9542 #42DA49

square

#4287DA #DA42D3 #DA9542 #42DA49

split-complementary

#4287DA #DA4942 #D3DA42

monochromatic

#1A4C87 #2468BA #4287DA #75A7E4 #A8C8EE

Accessibility & contrast

On white

3.68

#4287DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#4287DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287DA

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287DA	#FFFFFF	#000000	##000000
##4287DA	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#618DDD

Deuteranopia (green-blind)

#4A7FD8

Tritanopia (blue-blind)

#009AA6

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4287da;
/* rgb */ color: rgb(66, 135, 218);
/* oklch */ color: oklch(61.9% 0.144 254.6);

Tailwind

colors: {
  custom: {
    50: '#87a9e6',
    500: '#4287da',
    950: '#000000',
  },
}

SCSS

$custom: #4287da;
$custom-light: #87a9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4287da",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 218
  },
  "hsl": {
    "h": 212.763,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.61852,
    "c": 0.14415,
    "h": 254.6
  },
  "luminance": 0.23548
}

Semantic roles & 50–950 ramp

primary

#4287DA

secondary

#DBBF9C

accent

#9C3EEA

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4287DA

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

Preview Lab → · Contrast checker → · Palette generator →