#4290D9#4290D9

#4290D9 is a light, vivid cyan. Relative luminance 0.261; OKLCH L 63.8% C 0.134 H 249.4°. Best body text is #000000 at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#4290D9
RGB	rgb(66, 144, 217)
HSL	hsl(209, 67%, 55%)
HSV	hsv(209, 70%, 85%)
CMYK	cmyk(69.6%, 33.6%, 0%, 14.9%)
CIE-LAB	lab(58.14, -0.34, -44.26)
CIE-LCH	lch(58.14, 44.26, 269.56°)
OKLab	oklab(63.8% -0.0471 -0.1256)
OKLCH	oklch(63.8% 0.134 249.4)
XYZ	xyz(24.7397, 26.1119, 69.3684)
Luminance	0.2611 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290D9 #D98B42

analogous

#42D9D7 #4290D9 #4244D9

triadic

#4290D9 #D94290 #90D942

tetradic

#4290D9 #D742D9 #D98B42 #44D942

square

#4290D9 #D742D9 #D98B42 #44D942

split-complementary

#4290D9 #D94244 #D9D742

monochromatic

#1B5286 #2571B9 #4290D9 #75AEE3 #A8CCED

Accessibility & contrast

On white

3.37

#4290D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.22

#4290D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290D9

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290D9	#FFFFFF	#000000	##000000
##4290D9	1.00	3.37	6.22	6.22
#FFFFFF	3.37	1.00	21.00	21.00
#000000	6.22	21.00	1.00	1.00
##000000	6.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F94DC

Deuteranopia (green-blind)

#5A85D8

Tritanopia (blue-blind)

#00A1AA

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #4290d9;
/* rgb */ color: rgb(66, 144, 217);
/* oklch */ color: oklch(63.8% 0.134 249.4);

Tailwind

colors: {
  custom: {
    50: '#87b0e5',
    500: '#4290d9',
    950: '#000000',
  },
}

SCSS

$custom: #4290d9;
$custom-light: #87b0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4290d9",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 217
  },
  "hsl": {
    "h": 209.007,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.63802,
    "c": 0.13412,
    "h": 249.4
  },
  "luminance": 0.26115
}

Semantic roles & 50–950 ramp

primary

#4290D9

secondary

#DBBA9C

accent

#913EE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #4290D9

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

Preview Lab → · Contrast checker → · Palette generator →