#3981D0#3981D0

#3981D0 is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.6% C 0.141 H 253.0°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3981D0
RGB	rgb(57, 129, 208)
HSL	hsl(211, 62%, 52%)
HSV	hsv(211, 73%, 82%)
CMYK	cmyk(72.6%, 38%, 0%, 18.4%)
CIE-LAB	lab(53.08, 4.11, -47.23)
CIE-LCH	lch(53.08, 47.41, 274.97°)
OKLab	oklab(59.61% -0.041 -0.1346)
OKLCH	oklch(59.61% 0.141 253)
XYZ	xyz(20.9185, 21.1221, 62.6368)
Luminance	0.2112 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3981D0 #D08839

analogous

#39CCD0 #3981D0 #3D39D0

triadic

#3981D0 #D03981 #81D039

tetradic

#3981D0 #D039CC #D08839 #39D03D

square

#3981D0 #D039CC #D08839 #39D03D

split-complementary

#3981D0 #D03D39 #CCD039

monochromatic

#1B4573 #2763A5 #3981D0 #6AA0DC #9CC0E7

Accessibility & contrast

On white

4.02

#3981D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#3981D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3981D0

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3981D0	#FFFFFF	#000000	##000000
##3981D0	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C86D3

Deuteranopia (green-blind)

#4578CE

Tritanopia (blue-blind)

#00949E

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3981d0;
/* rgb */ color: rgb(57, 129, 208);
/* oklch */ color: oklch(59.6% 0.141 253.0);

Tailwind

colors: {
  custom: {
    50: '#82a5df',
    500: '#3981d0',
    950: '#000000',
  },
}

SCSS

$custom: #3981d0;
$custom-light: #82a5df;
$custom-dark: #000000;

JSON

{
  "hex": "#3981d0",
  "rgb": {
    "r": 57,
    "g": 129,
    "b": 208
  },
  "hsl": {
    "h": 211.391,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.59605,
    "c": 0.14069,
    "h": 253
  },
  "luminance": 0.21124
}

Semantic roles & 50–950 ramp

primary

#3981D0

secondary

#D3B491

accent

#9843E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3981D0

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

Preview Lab → · Contrast checker → · Palette generator →