#4290D1#4290D1

#4290D1 is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.4% C 0.124 H 246.6°. Best body text is #000000 at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#4290D1
RGB	rgb(66, 144, 209)
HSL	hsl(207, 61%, 54%)
HSV	hsv(207, 68%, 82%)
CMYK	cmyk(68.4%, 31.1%, 0%, 18%)
CIE-LAB	lab(57.76, -3.10, -40.39)
CIE-LCH	lch(57.76, 40.50, 265.61°)
OKLab	oklab(63.37% -0.0494 -0.1143)
OKLCH	oklch(63.37% 0.124 246.6)
XYZ	xyz(23.7243, 25.7057, 64.0206)
Luminance	0.2571 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290D1 #D18342

analogous

#42D1CB #4290D1 #4249D1

triadic

#4290D1 #D14290 #90D142

tetradic

#4290D1 #CB42D1 #D18342 #49D142

square

#4290D1 #CB42D1 #D18342 #49D142

split-complementary

#4290D1 #D14249 #D1CB42

monochromatic

#1E517B #2A71AC #4290D1 #73ADDD #A4CAE9

Accessibility & contrast

On white

3.42

#4290D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.14

#4290D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290D1

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290D1	#FFFFFF	#000000	##000000
##4290D1	1.00	3.42	6.14	6.14
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.14	21.00	1.00	1.00
##000000	6.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7392D4

Deuteranopia (green-blind)

#5F85D0

Tritanopia (blue-blind)

#00A0A7

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #4290d1;
/* rgb */ color: rgb(66, 144, 209);
/* oklch */ color: oklch(63.4% 0.124 246.6);

Tailwind

colors: {
  custom: {
    50: '#86b0df',
    500: '#4290d1',
    950: '#000000',
  },
}

SCSS

$custom: #4290d1;
$custom-light: #86b0df;
$custom-dark: #000000;

JSON

{
  "hex": "#4290d1",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 209
  },
  "hsl": {
    "h": 207.273,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.63371,
    "c": 0.12448,
    "h": 246.6
  },
  "luminance": 0.25708
}

Semantic roles & 50–950 ramp

primary

#4290D1

secondary

#D6B599

accent

#8D44E4

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4290D1

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

Preview Lab → · Contrast checker → · Palette generator →