#4290EB#4290EB

#4290EB is a light, vivid cyan. Relative luminance 0.271; OKLCH L 64.8% C 0.157 H 254.2°. Best body text is #000000 at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#4290EB
RGB	rgb(66, 144, 235)
HSL	hsl(212, 81%, 59%)
HSV	hsv(212, 72%, 92%)
CMYK	cmyk(71.9%, 38.7%, 0%, 7.8%)
CIE-LAB	lab(59.07, 5.97, -52.82)
CIE-LCH	lch(59.07, 53.15, 276.45°)
OKLab	oklab(64.83% -0.0426 -0.1506)
OKLCH	oklch(64.83% 0.157 254.2)
XYZ	xyz(27.2099, 27.0999, 82.3779)
Luminance	0.2710 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290EB #EB9D42

analogous

#42E4EB #4290EB #4942EB

triadic

#4290EB #EB4290 #90EB42

tetradic

#4290EB #EB42E4 #EB9D42 #42EB49

square

#4290EB #EB42E4 #EB9D42 #42EB49

split-complementary

#4290EB #EB4942 #E4EB42

monochromatic

#1154A2 #1770D9 #4290EB #79B1F1 #B1D1F7

Accessibility & contrast

On white

3.27

#4290EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.42

#4290EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290EB

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290EB	#FFFFFF	#000000	##000000
##4290EB	1.00	3.27	6.42	6.42
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.42	21.00	1.00	1.00
##000000	6.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6697EF

Deuteranopia (green-blind)

#4B87E9

Tritanopia (blue-blind)

#00A5B2

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #4290eb;
/* rgb */ color: rgb(66, 144, 235);
/* oklch */ color: oklch(64.8% 0.157 254.2);

Tailwind

colors: {
  custom: {
    50: '#8ab0f2',
    500: '#4290eb',
    950: '#000000',
  },
}

SCSS

$custom: #4290eb;
$custom-light: #8ab0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#4290eb",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 235
  },
  "hsl": {
    "h": 212.308,
    "s": 80.861,
    "l": 59.02
  },
  "oklch": {
    "l": 0.64826,
    "c": 0.15652,
    "h": 254.2
  },
  "luminance": 0.27103
}

Semantic roles & 50–950 ramp

primary

#4290EB

secondary

#E6C7A3

accent

#9C31F7

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #4290EB

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

Preview Lab → · Contrast checker → · Palette generator →