#4287BF#4287BF

#4287BF is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 60.4% C 0.110 H 245.6°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#4287BF
RGB	rgb(66, 135, 191)
HSL	hsl(207, 49%, 50%)
HSV	hsv(207, 65%, 75%)
CMYK	cmyk(65.4%, 29.3%, 0%, 25.1%)
CIE-LAB	lab(54.29, -4.03, -35.65)
CIE-LCH	lch(54.29, 35.88, 263.55°)
OKLab	oklab(60.36% -0.0457 -0.1006)
OKLCH	oklch(60.36% 0.11 245.6)
XYZ	xyz(20.3112, 22.2457, 52.5036)
Luminance	0.2225 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287BF #BF7A42

analogous

#42BFB8 #4287BF #4248BF

triadic

#4287BF #BF4287 #87BF42

tetradic

#4287BF #B842BF #BF7A42 #48BF42

square

#4287BF #B842BF #BF7A42 #48BF42

split-complementary

#4287BF #BF4248 #BFB842

monochromatic

#224765 #326792 #4287BF #70A4CE #9DC1DE

Accessibility & contrast

On white

3.85

#4287BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#4287BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287BF

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287BF	#FFFFFF	#000000	##000000
##4287BF	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E89C1

Deuteranopia (green-blind)

#5D7CBE

Tritanopia (blue-blind)

#00949B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4287bf;
/* rgb */ color: rgb(66, 135, 191);
/* oklch */ color: oklch(60.4% 0.110 245.6);

Tailwind

colors: {
  custom: {
    50: '#83a9d2',
    500: '#4287bf',
    950: '#000000',
  },
}

SCSS

$custom: #4287bf;
$custom-light: #83a9d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4287bf",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 191
  },
  "hsl": {
    "h": 206.88,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.60359,
    "c": 0.11047,
    "h": 245.6
  },
  "luminance": 0.22248
}

Semantic roles & 50–950 ramp

primary

#4287BF

secondary

#CAAC93

accent

#8D4FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4287BF

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

Preview Lab → · Contrast checker → · Palette generator →