#3990C8#3990C8

#3990C8 is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.6% C 0.118 H 240.8°. Best body text is #000000 at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3990C8
RGB	rgb(57, 144, 200)
HSL	hsl(203, 57%, 50%)
HSV	hsv(203, 72%, 78%)
CMYK	cmyk(71.5%, 28%, 0%, 21.6%)
CIE-LAB	lab(57.06, -7.54, -36.43)
CIE-LCH	lch(57.06, 37.20, 258.31°)
OKLab	oklab(62.61% -0.0576 -0.1029)
OKLCH	oklch(62.61% 0.118 240.8)
XYZ	xyz(22.0819, 24.9840, 58.2910)
Luminance	0.2499 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3990C8 #C87139

analogous

#39C8B9 #3990C8 #3948C8

triadic

#3990C8 #C83990 #90C839

tetradic

#3990C8 #B939C8 #C87139 #48C839

square

#3990C8 #B939C8 #C87139 #48C839

split-complementary

#3990C8 #C83948 #C8B939

monochromatic

#1D4C69 #2B6E99 #3990C8 #69ABD5 #99C6E3

Accessibility & contrast

On white

3.50

#3990C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.00

#3990C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3990C8

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3990C8	#FFFFFF	#000000	##000000
##3990C8	1.00	3.50	6.00	6.00
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.00	21.00	1.00	1.00
##000000	6.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7691CB

Deuteranopia (green-blind)

#6283C7

Tritanopia (blue-blind)

#009EA3

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3990c8;
/* rgb */ color: rgb(57, 144, 200);
/* oklch */ color: oklch(62.6% 0.118 240.8);

Tailwind

colors: {
  custom: {
    50: '#81b0d9',
    500: '#3990c8',
    950: '#000000',
  },
}

SCSS

$custom: #3990c8;
$custom-light: #81b0d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3990c8",
  "rgb": {
    "r": 57,
    "g": 144,
    "b": 200
  },
  "hsl": {
    "h": 203.497,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.62605,
    "c": 0.11788,
    "h": 240.8
  },
  "luminance": 0.24987
}

Semantic roles & 50–950 ramp

primary

#3990C8

secondary

#CEA78F

accent

#8348E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #3990C8

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

Preview Lab → · Contrast checker → · Palette generator →