#4287BA#4287BA

#4287BA is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 60.1% C 0.105 H 243.2°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4287BA
RGB	rgb(66, 135, 186)
HSL	hsl(206, 48%, 49%)
HSV	hsv(206, 65%, 73%)
CMYK	cmyk(64.5%, 27.4%, 0%, 27.1%)
CIE-LAB	lab(54.06, -5.72, -33.15)
CIE-LCH	lch(54.06, 33.64, 260.21°)
OKLab	oklab(60.1% -0.0472 -0.0934)
OKLCH	oklch(60.1% 0.105 243.2)
XYZ	xyz(19.7703, 22.0294, 49.6550)
Luminance	0.2203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287BA #BA7542

analogous

#42BAB1 #4287BA #424BBA

triadic

#4287BA #BA4287 #87BA42

tetradic

#4287BA #B142BA #BA7542 #4BBA42

square

#4287BA #B142BA #BA7542 #4BBA42

split-complementary

#4287BA #BA424B #BAB142

monochromatic

#224560 #32668D #4287BA #6EA4CB #9BC0DB

Accessibility & contrast

On white

3.88

#4287BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#4287BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287BA

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287BA	#FFFFFF	#000000	##000000
##4287BA	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7088BC

Deuteranopia (green-blind)

#607CB9

Tritanopia (blue-blind)

#009399

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4287ba;
/* rgb */ color: rgb(66, 135, 186);
/* oklch */ color: oklch(60.1% 0.105 243.2);

Tailwind

colors: {
  custom: {
    50: '#82a9cf',
    500: '#4287ba',
    950: '#000000',
  },
}

SCSS

$custom: #4287ba;
$custom-light: #82a9cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4287ba",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 186
  },
  "hsl": {
    "h": 205.5,
    "s": 47.619,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60103,
    "c": 0.10463,
    "h": 243.2
  },
  "luminance": 0.22031
}

Semantic roles & 50–950 ramp

primary

#4287BA

secondary

#C8A890

accent

#8A51D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #4287BA

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

Preview Lab → · Contrast checker → · Palette generator →