#4283CA#4283CA

#4283CA is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.0% C 0.128 H 252.5°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#4283CA
RGB	rgb(66, 131, 202)
HSL	hsl(211, 56%, 53%)
HSV	hsv(211, 67%, 79%)
CMYK	cmyk(67.3%, 35.1%, 0%, 20.8%)
CIE-LAB	lab(53.66, 2.12, -42.90)
CIE-LCH	lch(53.66, 42.95, 272.83°)
OKLab	oklab(60.04% -0.0384 -0.1217)
OKLCH	oklch(60.04% 0.128 252.5)
XYZ	xyz(21.0198, 21.6530, 58.9373)
Luminance	0.2165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283CA #CA8942

analogous

#42C7CA #4283CA #4542CA

triadic

#4283CA #CA4283 #83CA42

tetradic

#4283CA #CA42C7 #CA8942 #42CA45

square

#4283CA #CA42C7 #CA8942 #42CA45

split-complementary

#4283CA #CA4542 #C7CA42

monochromatic

#204772 #2D65A2 #4283CA #72A2D7 #A2C2E5

Accessibility & contrast

On white

3.94

#4283CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#4283CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283CA

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283CA	#FFFFFF	#000000	##000000
##4283CA	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6487CD

Deuteranopia (green-blind)

#507AC9

Tritanopia (blue-blind)

#00949D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #4283ca;
/* rgb */ color: rgb(66, 131, 202);
/* oklch */ color: oklch(60.0% 0.128 252.5);

Tailwind

colors: {
  custom: {
    50: '#85a6da',
    500: '#4283ca',
    950: '#000000',
  },
}

SCSS

$custom: #4283ca;
$custom-light: #85a6da;
$custom-dark: #000000;

JSON

{
  "hex": "#4283ca",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 202
  },
  "hsl": {
    "h": 211.324,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.60039,
    "c": 0.12767,
    "h": 252.5
  },
  "luminance": 0.21655
}

Semantic roles & 50–950 ramp

primary

#4283CA

secondary

#D1B596

accent

#9748DF

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283CA

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

Preview Lab → · Contrast checker → · Palette generator →