#4280BC#4280BC

#4280BC is a mid, moderate cyan. Relative luminance 0.202; OKLCH L 58.6% C 0.113 H 249.6°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#4280BC
RGB	rgb(66, 128, 188)
HSL	hsl(210, 48%, 50%)
HSV	hsv(210, 65%, 74%)
CMYK	cmyk(64.9%, 31.9%, 0%, 26.3%)
CIE-LAB	lab(52.09, -0.94, -37.38)
CIE-LCH	lch(52.09, 37.39, 268.56°)
OKLab	oklab(58.58% -0.0392 -0.1057)
OKLCH	oklch(58.58% 0.113 249.6)
XYZ	xyz(19.0397, 20.2255, 50.4677)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280BC #BC7E42

analogous

#42BCBB #4280BC #4243BC

triadic

#4280BC #BC4280 #80BC42

tetradic

#4280BC #BB42BC #BC7E42 #43BC42

square

#4280BC #BB42BC #BC7E42 #43BC42

split-complementary

#4280BC #BC4243 #BCBB42

monochromatic

#224261 #32618F #4280BC #6F9ECC #9CBDDC

Accessibility & contrast

On white

4.16

#4280BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#4280BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280BC

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280BC	#FFFFFF	#000000	##000000
##4280BC	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6683BF

Deuteranopia (green-blind)

#5577BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #4280bc;
/* rgb */ color: rgb(66, 128, 188);
/* oklch */ color: oklch(58.6% 0.113 249.6);

Tailwind

colors: {
  custom: {
    50: '#82a4d0',
    500: '#4280bc',
    950: '#000000',
  },
}

SCSS

$custom: #4280bc;
$custom-light: #82a4d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4280bc",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 188
  },
  "hsl": {
    "h": 209.508,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.58584,
    "c": 0.11275,
    "h": 249.6
  },
  "luminance": 0.20227
}

Semantic roles & 50–950 ramp

primary

#4280BC

secondary

#C9AC91

accent

#9350D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4280BC

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

Preview Lab → · Contrast checker → · Palette generator →