#3981B8#3981B8

#3981B8 is a mid, moderate cyan. Relative luminance 0.200; OKLCH L 58.3% C 0.111 H 244.6°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3981B8
RGB	rgb(57, 129, 184)
HSL	hsl(206, 53%, 47%)
HSV	hsv(206, 69%, 72%)
CMYK	cmyk(69%, 29.9%, 0%, 27.8%)
CIE-LAB	lab(51.87, -4.43, -35.46)
CIE-LCH	lch(51.87, 35.73, 262.88°)
OKLab	oklab(58.26% -0.0477 -0.1002)
OKLCH	oklch(58.26% 0.111 244.6)
XYZ	xyz(18.1860, 20.0291, 48.2457)
Luminance	0.2003 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3981B8 #B87039

analogous

#39B8AF #3981B8 #3942B8

triadic

#3981B8 #B83981 #81B839

tetradic

#3981B8 #AF39B8 #B87039 #42B839

square

#3981B8 #AF39B8 #B87039 #42B839

split-complementary

#3981B8 #B83942 #B8AF39

monochromatic

#1C3F5B #2B6089 #3981B8 #609ECE #8FBBDC

Accessibility & contrast

On white

4.19

#3981B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#3981B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3981B8

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3981B8	#FFFFFF	#000000	##000000
##3981B8	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6882BA

Deuteranopia (green-blind)

#5776B7

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3981b8;
/* rgb */ color: rgb(57, 129, 184);
/* oklch */ color: oklch(58.3% 0.111 244.6);

Tailwind

colors: {
  custom: {
    50: '#7ea5cd',
    500: '#3981b8',
    950: '#000000',
  },
}

SCSS

$custom: #3981b8;
$custom-light: #7ea5cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3981b8",
  "rgb": {
    "r": 57,
    "g": 129,
    "b": 184
  },
  "hsl": {
    "h": 205.984,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.58256,
    "c": 0.11096,
    "h": 244.6
  },
  "luminance": 0.20031
}

Semantic roles & 50–950 ramp

primary

#3981B8

secondary

#C7A286

accent

#8A4CDC

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3981B8

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

Preview Lab → · Contrast checker → · Palette generator →