#4284CB#4284CB

#4284CB is a mid, vivid cyan. Relative luminance 0.220; OKLCH L 60.3% C 0.128 H 252.2°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#4284CB
RGB	rgb(66, 132, 203)
HSL	hsl(211, 57%, 53%)
HSV	hsv(211, 67%, 80%)
CMYK	cmyk(67.5%, 35%, 0%, 20.4%)
CIE-LAB	lab(54.00, 1.87, -42.93)
CIE-LCH	lch(54.00, 42.97, 272.50°)
OKLab	oklab(60.32% -0.0392 -0.1218)
OKLCH	oklch(60.32% 0.128 252.2)
XYZ	xyz(21.2735, 21.9704, 59.6079)
Luminance	0.2197 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4284CB #CB8942

analogous

#42C8CB #4284CB #4542CB

triadic

#4284CB #CB4284 #84CB42

tetradic

#4284CB #CB42C8 #CB8942 #42CB45

square

#4284CB #CB42C8 #CB8942 #42CB45

split-complementary

#4284CB #CB4542 #C8CB42

monochromatic

#204873 #2D66A3 #4284CB #72A3D8 #A2C2E5

Accessibility & contrast

On white

3.89

#4284CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#4284CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4284CB

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4284CB	#FFFFFF	#000000	##000000
##4284CB	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6588CE

Deuteranopia (green-blind)

#517BCA

Tritanopia (blue-blind)

#00959E

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4284cb;
/* rgb */ color: rgb(66, 132, 203);
/* oklch */ color: oklch(60.3% 0.128 252.2);

Tailwind

colors: {
  custom: {
    50: '#85a7db',
    500: '#4284cb',
    950: '#000000',
  },
}

SCSS

$custom: #4284cb;
$custom-light: #85a7db;
$custom-dark: #000000;

JSON

{
  "hex": "#4284cb",
  "rgb": {
    "r": 66,
    "g": 132,
    "b": 203
  },
  "hsl": {
    "h": 211.095,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.60321,
    "c": 0.12797,
    "h": 252.2
  },
  "luminance": 0.21973
}

Semantic roles & 50–950 ramp

primary

#4284CB

secondary

#D2B597

accent

#9748E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4284CB

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

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