#4290BB#4290BB

#4290BB is a light, moderate cyan. Relative luminance 0.247; OKLCH L 62.3% C 0.100 H 235.7°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#4290BB
RGB	rgb(66, 144, 187)
HSL	hsl(201, 48%, 50%)
HSV	hsv(201, 65%, 73%)
CMYK	cmyk(64.7%, 23%, 0%, 26.7%)
CIE-LAB	lab(56.77, -10.51, -29.50)
CIE-LCH	lch(56.77, 31.32, 250.39°)
OKLab	oklab(62.27% -0.0564 -0.0827)
OKLCH	oklch(62.27% 0.1 235.7)
XYZ	xyz(21.1862, 24.6904, 50.6533)
Luminance	0.2469 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290BB #BB6D42

analogous

#42BBA9 #4290BB #4254BB

triadic

#4290BB #BB4290 #90BB42

tetradic

#4290BB #A942BB #BB6D42 #54BB42

square

#4290BB #A942BB #BB6D42 #54BB42

split-complementary

#4290BB #BB4254 #BBA942

monochromatic

#224A61 #326D8E #4290BB #6EABCC #9CC5DC

Accessibility & contrast

On white

3.54

#4290BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#4290BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290BB

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290BB	#FFFFFF	#000000	##000000
##4290BB	1.00	3.54	5.94	5.94
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8FBD

Deuteranopia (green-blind)

#6B83BA

Tritanopia (blue-blind)

#009B9E

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #4290bb;
/* rgb */ color: rgb(66, 144, 187);
/* oklch */ color: oklch(62.3% 0.100 235.7);

Tailwind

colors: {
  custom: {
    50: '#83b0cf',
    500: '#4290bb',
    950: '#000000',
  },
}

SCSS

$custom: #4290bb;
$custom-light: #83b0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4290bb",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 187
  },
  "hsl": {
    "h": 201.322,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.62269,
    "c": 0.10017,
    "h": 235.7
  },
  "luminance": 0.24693
}

Semantic roles & 50–950 ramp

primary

#4290BB

secondary

#C8A491

accent

#8050D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4290BB

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

Preview Lab → · Contrast checker → · Palette generator →