#4280BB#4280BB

#4280BB is a mid, moderate cyan. Relative luminance 0.202; OKLCH L 58.5% C 0.111 H 249.2°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#4280BB
RGB	rgb(66, 128, 187)
HSL	hsl(209, 48%, 50%)
HSV	hsv(209, 65%, 73%)
CMYK	cmyk(64.7%, 31.6%, 0%, 26.7%)
CIE-LAB	lab(52.04, -1.28, -36.88)
CIE-LCH	lch(52.04, 36.91, 268.01°)
OKLab	oklab(58.53% -0.0395 -0.1042)
OKLCH	oklch(58.53% 0.111 249.2)
XYZ	xyz(18.9323, 20.1826, 49.9020)
Luminance	0.2018 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280BB #BB7D42

analogous

#42BBBA #4280BB #4244BB

triadic

#4280BB #BB4280 #80BB42

tetradic

#4280BB #BA42BB #BB7D42 #44BB42

square

#4280BB #BA42BB #BB7D42 #44BB42

split-complementary

#4280BB #BB4244 #BBBA42

monochromatic

#224261 #32618E #4280BB #6E9ECC #9CBCDC

Accessibility & contrast

On white

4.17

#4280BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#4280BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280BB

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280BB	#FFFFFF	#000000	##000000
##4280BB	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6683BE

Deuteranopia (green-blind)

#5677BA

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4280bb;
/* rgb */ color: rgb(66, 128, 187);
/* oklch */ color: oklch(58.5% 0.111 249.2);

Tailwind

colors: {
  custom: {
    50: '#82a4cf',
    500: '#4280bb',
    950: '#000000',
  },
}

SCSS

$custom: #4280bb;
$custom-light: #82a4cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4280bb",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 187
  },
  "hsl": {
    "h": 209.256,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.5853,
    "c": 0.11149,
    "h": 249.2
  },
  "luminance": 0.20184
}

Semantic roles & 50–950 ramp

primary

#4280BB

secondary

#C8AC91

accent

#9250D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #4280BB

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

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