#3990BB#3990BB

#3990BB is a mid, moderate cyan. Relative luminance 0.244; OKLCH L 62.0% C 0.104 H 233.7°. Best body text is #000000 at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#3990BB
RGB	rgb(57, 144, 187)
HSL	hsl(200, 53%, 48%)
HSV	hsv(200, 70%, 73%)
CMYK	cmyk(69.5%, 23%, 0%, 26.7%)
CIE-LAB	lab(56.49, -11.98, -29.96)
CIE-LCH	lch(56.49, 32.27, 248.21°)
OKLab	oklab(61.96% -0.0619 -0.0842)
OKLCH	oklch(61.96% 0.105 233.7)
XYZ	xyz(20.6267, 24.4020, 50.6270)
Luminance	0.2440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3990BB #BB6439

analogous

#39BBA5 #3990BB #394FBB

triadic

#3990BB #BB3990 #90BB39

tetradic

#3990BB #A539BB #BB6439 #4FBB39

square

#3990BB #A539BB #BB6439 #4FBB39

split-complementary

#3990BB #BB394F #BBA539

monochromatic

#1C485D #2B6C8C #3990BB #62ABCF #91C4DD

Accessibility & contrast

On white

3.57

#3990BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.88

#3990BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3990BB

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3990BB	#FFFFFF	#000000	##000000
##3990BB	1.00	3.57	5.88	5.88
#FFFFFF	3.57	1.00	21.00	21.00
#000000	5.88	21.00	1.00	1.00
##000000	5.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8FBD

Deuteranopia (green-blind)

#6982BA

Tritanopia (blue-blind)

#009B9E

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3990bb;
/* rgb */ color: rgb(57, 144, 187);
/* oklch */ color: oklch(62.0% 0.104 233.7);

Tailwind

colors: {
  custom: {
    50: '#7fb0cf',
    500: '#3990bb',
    950: '#000000',
  },
}

SCSS

$custom: #3990bb;
$custom-light: #7fb0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3990bb",
  "rgb": {
    "r": 57,
    "g": 144,
    "b": 187
  },
  "hsl": {
    "h": 199.846,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.61962,
    "c": 0.1045,
    "h": 233.7
  },
  "luminance": 0.24404
}

Semantic roles & 50–950 ramp

primary

#3990BB

secondary

#C89D87

accent

#7B4BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3990BB

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

Preview Lab → · Contrast checker → · Palette generator →