#4283CE#4283CE

#4283CE is a mid, vivid cyan. Relative luminance 0.218; OKLCH L 60.3% C 0.133 H 253.6°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4283CE
RGB	rgb(66, 131, 206)
HSL	hsl(212, 59%, 53%)
HSV	hsv(212, 68%, 81%)
CMYK	cmyk(68%, 36.4%, 0%, 19.2%)
CIE-LAB	lab(53.86, 3.52, -44.84)
CIE-LCH	lch(53.86, 44.98, 274.49°)
OKLab	oklab(60.27% -0.0374 -0.1274)
OKLCH	oklch(60.27% 0.133 253.6)
XYZ	xyz(21.4996, 21.8449, 61.4640)
Luminance	0.2185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4283CE #CE8D42

analogous

#42C9CE #4283CE #4742CE

triadic

#4283CE #CE4283 #83CE42

tetradic

#4283CE #CE42C9 #CE8D42 #42CE47

square

#4283CE #CE42C9 #CE8D42 #42CE47

split-complementary

#4283CE #CE4742 #C9CE42

monochromatic

#1F4877 #2B65A7 #4283CE #73A3DB #A3C3E7

Accessibility & contrast

On white

3.91

#4283CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4283CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4283CE

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4283CE	#FFFFFF	#000000	##000000
##4283CE	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6188D1

Deuteranopia (green-blind)

#4D7BCC

Tritanopia (blue-blind)

#00949F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4283ce;
/* rgb */ color: rgb(66, 131, 206);
/* oklch */ color: oklch(60.3% 0.133 253.6);

Tailwind

colors: {
  custom: {
    50: '#85a6dd',
    500: '#4283ce',
    950: '#000000',
  },
}

SCSS

$custom: #4283ce;
$custom-light: #85a6dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4283ce",
  "rgb": {
    "r": 66,
    "g": 131,
    "b": 206
  },
  "hsl": {
    "h": 212.143,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.60267,
    "c": 0.1328,
    "h": 253.6
  },
  "luminance": 0.21847
}

Semantic roles & 50–950 ramp

primary

#4283CE

secondary

#D4B898

accent

#9946E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4283CE

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

Preview Lab → · Contrast checker → · Palette generator →