#4287BC#4287BC

#4287BC is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.2% C 0.107 H 244.2°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#4287BC
RGB	rgb(66, 135, 188)
HSL	hsl(206, 48%, 50%)
HSV	hsv(206, 65%, 74%)
CMYK	cmyk(64.9%, 28.2%, 0%, 26.3%)
CIE-LAB	lab(54.15, -5.05, -34.15)
CIE-LCH	lch(54.15, 34.53, 261.59°)
OKLab	oklab(60.21% -0.0466 -0.0963)
OKLCH	oklch(60.21% 0.107 244.2)
XYZ	xyz(19.9844, 22.1150, 50.7826)
Luminance	0.2212 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287BC #BC7742

analogous

#42BCB4 #4287BC #424ABC

triadic

#4287BC #BC4287 #87BC42

tetradic

#4287BC #B442BC #BC7742 #4ABC42

square

#4287BC #B442BC #BC7742 #4ABC42

split-complementary

#4287BC #BC424A #BCB442

monochromatic

#224661 #32668F #4287BC #6FA4CC #9CC0DC

Accessibility & contrast

On white

3.87

#4287BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#4287BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287BC

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287BC	#FFFFFF	#000000	##000000
##4287BC	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F88BE

Deuteranopia (green-blind)

#5F7CBB

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4287bc;
/* rgb */ color: rgb(66, 135, 188);
/* oklch */ color: oklch(60.2% 0.107 244.2);

Tailwind

colors: {
  custom: {
    50: '#82a9d0',
    500: '#4287bc',
    950: '#000000',
  },
}

SCSS

$custom: #4287bc;
$custom-light: #82a9d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4287bc",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 188
  },
  "hsl": {
    "h": 206.066,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.60205,
    "c": 0.10694,
    "h": 244.2
  },
  "luminance": 0.22117
}

Semantic roles & 50–950 ramp

primary

#4287BC

secondary

#C9A991

accent

#8B50D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4287BC

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

Preview Lab → · Contrast checker → · Palette generator →