#4290DA#4290DA

#4290DA is a light, vivid cyan. Relative luminance 0.262; OKLCH L 63.9% C 0.135 H 249.8°. Best body text is #000000 at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#4290DA
RGB	rgb(66, 144, 218)
HSL	hsl(209, 67%, 56%)
HSV	hsv(209, 70%, 85%)
CMYK	cmyk(69.7%, 33.9%, 0%, 14.5%)
CIE-LAB	lab(58.19, 0.01, -44.74)
CIE-LCH	lch(58.19, 44.74, 270.01°)
OKLab	oklab(63.86% -0.0468 -0.127)
OKLCH	oklch(63.86% 0.135 249.8)
XYZ	xyz(24.8702, 26.1640, 70.0555)
Luminance	0.2617 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290DA #DA8C42

analogous

#42DAD8 #4290DA #4244DA

triadic

#4290DA #DA4290 #90DA42

tetradic

#4290DA #D842DA #DA8C42 #44DA42

square

#4290DA #D842DA #DA8C42 #44DA42

split-complementary

#4290DA #DA4244 #DAD842

monochromatic

#1A5287 #2471BA #4290DA #75AEE4 #A8CCEE

Accessibility & contrast

On white

3.37

#4290DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.23

#4290DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290DA

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290DA	#FFFFFF	#000000	##000000
##4290DA	1.00	3.37	6.23	6.23
#FFFFFF	3.37	1.00	21.00	21.00
#000000	6.23	21.00	1.00	1.00
##000000	6.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F94DD

Deuteranopia (green-blind)

#5985D9

Tritanopia (blue-blind)

#00A1AB

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #4290da;
/* rgb */ color: rgb(66, 144, 218);
/* oklch */ color: oklch(63.9% 0.135 249.8);

Tailwind

colors: {
  custom: {
    50: '#87b0e6',
    500: '#4290da',
    950: '#000000',
  },
}

SCSS

$custom: #4290da;
$custom-light: #87b0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4290da",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 218
  },
  "hsl": {
    "h": 209.211,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.63857,
    "c": 0.13533,
    "h": 249.8
  },
  "luminance": 0.26167
}

Semantic roles & 50–950 ramp

primary

#4290DA

secondary

#DBBB9C

accent

#923EEA

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #4290DA

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

Preview Lab → · Contrast checker → · Palette generator →