#3990D2#3990D2

#3990D2 is a light, vivid cyan. Relative luminance 0.255; OKLCH L 63.1% C 0.129 H 245.0°. Best body text is #000000 at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3990D2
RGB	rgb(57, 144, 210)
HSL	hsl(206, 63%, 52%)
HSV	hsv(206, 73%, 82%)
CMYK	cmyk(72.9%, 31.4%, 0%, 17.6%)
CIE-LAB	lab(57.53, -4.05, -41.33)
CIE-LCH	lch(57.53, 41.52, 264.40°)
OKLab	oklab(63.13% -0.0545 -0.1171)
OKLCH	oklch(63.13% 0.129 245)
XYZ	xyz(23.2890, 25.4669, 64.6485)
Luminance	0.2547 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3990D2 #D27B39

analogous

#39D2C7 #3990D2 #3944D2

triadic

#3990D2 #D23990 #90D239

tetradic

#3990D2 #C739D2 #D27B39 #44D239

square

#3990D2 #C739D2 #D27B39 #44D239

split-complementary

#3990D2 #D23944 #D2C739

monochromatic

#1B4F76 #2670A8 #3990D2 #6BACDD #9DC8E9

Accessibility & contrast

On white

3.45

#3990D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.09

#3990D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3990D2

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3990D2	#FFFFFF	#000000	##000000
##3990D2	1.00	3.45	6.09	6.09
#FFFFFF	3.45	1.00	21.00	21.00
#000000	6.09	21.00	1.00	1.00
##000000	6.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7292D5

Deuteranopia (green-blind)

#5C84D1

Tritanopia (blue-blind)

#00A0A7

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3990d2;
/* rgb */ color: rgb(57, 144, 210);
/* oklch */ color: oklch(63.1% 0.129 245.0);

Tailwind

colors: {
  custom: {
    50: '#83b0e0',
    500: '#3990d2',
    950: '#000000',
  },
}

SCSS

$custom: #3990d2;
$custom-light: #83b0e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3990d2",
  "rgb": {
    "r": 57,
    "g": 144,
    "b": 210
  },
  "hsl": {
    "h": 205.882,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.63128,
    "c": 0.12917,
    "h": 245
  },
  "luminance": 0.2547
}

Semantic roles & 50–950 ramp

primary

#3990D2

secondary

#D5AF92

accent

#8942E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3990D2

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

Preview Lab → · Contrast checker → · Palette generator →