#4290CE#4290CE

#4290CE is a light, vivid cyan. Relative luminance 0.256; OKLCH L 63.2% C 0.121 H 245.4°. Best body text is #000000 at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#4290CE
RGB	rgb(66, 144, 206)
HSL	hsl(207, 59%, 53%)
HSV	hsv(207, 68%, 81%)
CMYK	cmyk(68%, 30.1%, 0%, 19.2%)
CIE-LAB	lab(57.62, -4.13, -38.92)
CIE-LCH	lch(57.62, 39.14, 263.94°)
OKLab	oklab(63.21% -0.0503 -0.11)
OKLCH	oklch(63.21% 0.121 245.4)
XYZ	xyz(23.3564, 25.5585, 62.0829)
Luminance	0.2556 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290CE #CE8042

analogous

#42CEC6 #4290CE #424ACE

triadic

#4290CE #CE4290 #90CE42

tetradic

#4290CE #C642CE #CE8042 #4ACE42

square

#4290CE #C642CE #CE8042 #4ACE42

split-complementary

#4290CE #CE424A #CEC642

monochromatic

#1F5077 #2B70A7 #4290CE #73ADDB #A3C9E7

Accessibility & contrast

On white

3.44

#4290CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.11

#4290CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290CE

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290CE	#FFFFFF	#000000	##000000
##4290CE	1.00	3.44	6.11	6.11
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.11	21.00	1.00	1.00
##000000	6.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7492D1

Deuteranopia (green-blind)

#6184CD

Tritanopia (blue-blind)

#009FA6

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #4290ce;
/* rgb */ color: rgb(66, 144, 206);
/* oklch */ color: oklch(63.2% 0.121 245.4);

Tailwind

colors: {
  custom: {
    50: '#85b0dd',
    500: '#4290ce',
    950: '#000000',
  },
}

SCSS

$custom: #4290ce;
$custom-light: #85b0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4290ce",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 206
  },
  "hsl": {
    "h": 206.571,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.63214,
    "c": 0.12095,
    "h": 245.4
  },
  "luminance": 0.25561
}

Semantic roles & 50–950 ramp

primary

#4290CE

secondary

#D4B298

accent

#8B46E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4290CE

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

Preview Lab → · Contrast checker → · Palette generator →