#4290E9#4290E9

#4290E9 is a light, vivid cyan. Relative luminance 0.270; OKLCH L 64.7% C 0.154 H 253.8°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#4290E9
RGB	rgb(66, 144, 233)
HSL	hsl(212, 79%, 59%)
HSV	hsv(212, 72%, 91%)
CMYK	cmyk(71.7%, 38.2%, 0%, 8.6%)
CIE-LAB	lab(58.96, 5.26, -51.88)
CIE-LCH	lch(58.96, 52.14, 275.79°)
OKLab	oklab(64.71% -0.0431 -0.1478)
OKLCH	oklch(64.71% 0.154 253.8)
XYZ	xyz(26.9226, 26.9850, 80.8647)
Luminance	0.2699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290E9 #E99B42

analogous

#42E3E9 #4290E9 #4742E9

triadic

#4290E9 #E94290 #90E942

tetradic

#4290E9 #E942E3 #E99B42 #42E947

square

#4290E9 #E942E3 #E99B42 #42E947

split-complementary

#4290E9 #E94742 #E3E942

monochromatic

#12549E #1971D5 #4290E9 #79B0EF #B0D0F6

Accessibility & contrast

On white

3.28

#4290E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#4290E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290E9

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290E9	#FFFFFF	#000000	##000000
##4290E9	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6796ED

Deuteranopia (green-blind)

#4D87E7

Tritanopia (blue-blind)

#00A5B1

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #4290e9;
/* rgb */ color: rgb(66, 144, 233);
/* oklch */ color: oklch(64.7% 0.154 253.8);

Tailwind

colors: {
  custom: {
    50: '#8ab0f0',
    500: '#4290e9',
    950: '#000000',
  },
}

SCSS

$custom: #4290e9;
$custom-light: #8ab0f0;
$custom-dark: #000000;

JSON

{
  "hex": "#4290e9",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 233
  },
  "hsl": {
    "h": 211.976,
    "s": 79.147,
    "l": 58.627
  },
  "oklch": {
    "l": 0.64708,
    "c": 0.154,
    "h": 253.8
  },
  "luminance": 0.26988
}

Semantic roles & 50–950 ramp

primary

#4290E9

secondary

#E4C6A2

accent

#9A32F6

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #4290E9

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

Preview Lab → · Contrast checker → · Palette generator →