#3981D3#3981D3

#3981D3 is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.8% C 0.145 H 253.8°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3981D3
RGB	rgb(57, 129, 211)
HSL	hsl(212, 64%, 53%)
HSV	hsv(212, 73%, 83%)
CMYK	cmyk(73%, 38.9%, 0%, 17.3%)
CIE-LAB	lab(53.24, 5.19, -48.67)
CIE-LCH	lch(53.24, 48.94, 276.09°)
OKLab	oklab(59.79% -0.0403 -0.1388)
OKLCH	oklch(59.79% 0.145 253.8)
XYZ	xyz(21.2911, 21.2711, 64.5990)
Luminance	0.2127 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3981D3 #D38B39

analogous

#39CED3 #3981D3 #3E39D3

triadic

#3981D3 #D33981 #81D339

tetradic

#3981D3 #D339CE #D38B39 #39D33E

square

#3981D3 #D339CE #D38B39 #39D33E

split-complementary

#3981D3 #D33E39 #CED339

monochromatic

#1A4677 #2663A9 #3981D3 #6BA1DE #9DC1E9

Accessibility & contrast

On white

4.00

#3981D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#3981D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3981D3

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3981D3	#FFFFFF	#000000	##000000
##3981D3	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B87D6

Deuteranopia (green-blind)

#4379D1

Tritanopia (blue-blind)

#0094A0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3981d3;
/* rgb */ color: rgb(57, 129, 211);
/* oklch */ color: oklch(59.8% 0.145 253.8);

Tailwind

colors: {
  custom: {
    50: '#83a5e1',
    500: '#3981d3',
    950: '#000000',
  },
}

SCSS

$custom: #3981d3;
$custom-light: #83a5e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3981d3",
  "rgb": {
    "r": 57,
    "g": 129,
    "b": 211
  },
  "hsl": {
    "h": 211.948,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.59785,
    "c": 0.14453,
    "h": 253.8
  },
  "luminance": 0.21274
}

Semantic roles & 50–950 ramp

primary

#3981D3

secondary

#D5B692

accent

#9941E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3981D3

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

Preview Lab → · Contrast checker → · Palette generator →