#4290CC#4290CC

#4290CC is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.1% C 0.119 H 244.6°. Best body text is #000000 at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#4290CC
RGB	rgb(66, 144, 204)
HSL	hsl(206, 58%, 53%)
HSV	hsv(206, 68%, 80%)
CMYK	cmyk(67.6%, 29.4%, 0%, 20%)
CIE-LAB	lab(57.52, -4.81, -37.94)
CIE-LCH	lch(57.52, 38.24, 262.77°)
OKLab	oklab(63.11% -0.0509 -0.1072)
OKLCH	oklch(63.11% 0.119 244.6)
XYZ	xyz(23.1150, 25.4620, 60.8115)
Luminance	0.2546 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290CC #CC7E42

analogous

#42CCC3 #4290CC #424BCC

triadic

#4290CC #CC4290 #90CC42

tetradic

#4290CC #C342CC #CC7E42 #4BCC42

square

#4290CC #C342CC #CC7E42 #4BCC42

split-complementary

#4290CC #CC424B #CCC342

monochromatic

#1F4F74 #2C70A4 #4290CC #72ACD9 #A2C9E6

Accessibility & contrast

On white

3.45

#4290CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.09

#4290CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290CC

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290CC	#FFFFFF	#000000	##000000
##4290CC	1.00	3.45	6.09	6.09
#FFFFFF	3.45	1.00	21.00	21.00
#000000	6.09	21.00	1.00	1.00
##000000	6.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7592CF

Deuteranopia (green-blind)

#6284CB

Tritanopia (blue-blind)

#009FA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #4290cc;
/* rgb */ color: rgb(66, 144, 204);
/* oklch */ color: oklch(63.1% 0.119 244.6);

Tailwind

colors: {
  custom: {
    50: '#85b0dc',
    500: '#4290cc',
    950: '#000000',
  },
}

SCSS

$custom: #4290cc;
$custom-light: #85b0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4290cc",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 204
  },
  "hsl": {
    "h": 206.087,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.6311,
    "c": 0.11862,
    "h": 244.6
  },
  "luminance": 0.25464
}

Semantic roles & 50–950 ramp

primary

#4290CC

secondary

#D3B197

accent

#8A47E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4290CC

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

Preview Lab → · Contrast checker → · Palette generator →