#4290B3#4290B3

#4290B3 is a mid, moderate cyan. Relative luminance 0.244; OKLCH L 61.9% C 0.093 H 230.2°. Best body text is #000000 at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#4290B3
RGB	rgb(66, 144, 179)
HSL	hsl(199, 46%, 48%)
HSV	hsv(199, 63%, 70%)
CMYK	cmyk(63.1%, 19.6%, 0%, 29.8%)
CIE-LAB	lab(56.44, -13.12, -25.46)
CIE-LCH	lch(56.44, 28.64, 242.73°)
OKLab	oklab(61.9% -0.0593 -0.0712)
OKLCH	oklch(61.9% 0.093 230.2)
XYZ	xyz(20.3535, 24.3574, 46.2679)
Luminance	0.2436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4290B3 #B36542

analogous

#42B39D #4290B3 #4258B3

triadic

#4290B3 #B34290 #90B342

tetradic

#4290B3 #9D42B3 #B36542 #58B342

square

#4290B3 #9D42B3 #B36542 #58B342

split-complementary

#4290B3 #B34258 #B39D42

monochromatic

#21485A #326C86 #4290B3 #6AABC8 #97C4D9

Accessibility & contrast

On white

3.58

#4290B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.87

#4290B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4290B3

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4290B3	#FFFFFF	#000000	##000000
##4290B3	1.00	3.58	5.87	5.87
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.87	21.00	1.00	1.00
##000000	5.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8EB5

Deuteranopia (green-blind)

#6E82B3

Tritanopia (blue-blind)

#009A9B

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #4290b3;
/* rgb */ color: rgb(66, 144, 179);
/* oklch */ color: oklch(61.9% 0.093 230.2);

Tailwind

colors: {
  custom: {
    50: '#82b0c9',
    500: '#4290b3',
    950: '#000000',
  },
}

SCSS

$custom: #4290b3;
$custom-light: #82b0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4290b3",
  "rgb": {
    "r": 66,
    "g": 144,
    "b": 179
  },
  "hsl": {
    "h": 198.584,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.61899,
    "c": 0.09265,
    "h": 230.2
  },
  "luminance": 0.24359
}

Semantic roles & 50–950 ramp

primary

#4290B3

secondary

#C49E8C

accent

#7B52D6

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #4290B3

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

Preview Lab → · Contrast checker → · Palette generator →