#3990C7#3990C7

#3990C7 is a light, moderate cyan. Relative luminance 0.249; OKLCH L 62.6% C 0.117 H 240.3°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3990C7
RGB	rgb(57, 144, 199)
HSL	hsl(203, 56%, 50%)
HSV	hsv(203, 71%, 78%)
CMYK	cmyk(71.4%, 27.6%, 0%, 22%)
CIE-LAB	lab(57.01, -7.88, -35.94)
CIE-LCH	lch(57.01, 36.79, 257.63°)
OKLab	oklab(62.55% -0.0579 -0.1014)
OKLCH	oklch(62.55% 0.117 240.3)
XYZ	xyz(21.9654, 24.9374, 57.6775)
Luminance	0.2494 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3990C7 #C77039

analogous

#39C7B7 #3990C7 #3949C7

triadic

#3990C7 #C73990 #90C739

tetradic

#3990C7 #B739C7 #C77039 #49C739

square

#3990C7 #B739C7 #C77039 #49C739

split-complementary

#3990C7 #C73949 #C7B739

monochromatic

#1D4B68 #2B6E98 #3990C7 #69ABD4 #98C5E2

Accessibility & contrast

On white

3.51

#3990C7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#3990C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3990C7

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3990C7	#FFFFFF	#000000	##000000
##3990C7	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7690C9

Deuteranopia (green-blind)

#6383C6

Tritanopia (blue-blind)

#009EA3

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3990c7;
/* rgb */ color: rgb(57, 144, 199);
/* oklch */ color: oklch(62.6% 0.117 240.3);

Tailwind

colors: {
  custom: {
    50: '#81b0d8',
    500: '#3990c7',
    950: '#000000',
  },
}

SCSS

$custom: #3990c7;
$custom-light: #81b0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3990c7",
  "rgb": {
    "r": 57,
    "g": 144,
    "b": 199
  },
  "hsl": {
    "h": 203.239,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.62554,
    "c": 0.11679,
    "h": 240.3
  },
  "luminance": 0.2494
}

Semantic roles & 50–950 ramp

primary

#3990C7

secondary

#CEA78E

accent

#8349DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #3990C7

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

Preview Lab → · Contrast checker → · Palette generator →