#3F83BD#3F83BD

#3F83BD is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 59.2% C 0.113 H 246.9°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F83BD
RGB	rgb(63, 131, 189)
HSL	hsl(208, 50%, 49%)
HSV	hsv(208, 67%, 74%)
CMYK	cmyk(66.7%, 30.7%, 0%, 25.9%)
CIE-LAB	lab(52.91, -2.89, -36.68)
CIE-LCH	lch(52.91, 36.79, 265.50°)
OKLab	oklab(59.21% -0.0442 -0.1037)
OKLCH	oklch(59.21% 0.113 246.9)
XYZ	xyz(19.3481, 20.9615, 51.1606)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83BD #BD793F

analogous

#3FBDB8 #3F83BD #3F44BD

triadic

#3F83BD #BD3F83 #83BD3F

tetradic

#3F83BD #B83FBD #BD793F #44BD3F

square

#3F83BD #B83FBD #BD793F #44BD3F

split-complementary

#3F83BD #BD3F44 #BDB83F

monochromatic

#204361 #30638F #3F83BD #6BA1CE #99BEDD

Accessibility & contrast

On white

4.04

#3F83BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#3F83BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83BD

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83BD	#FFFFFF	#000000	##000000
##3F83BD	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6985C0

Deuteranopia (green-blind)

#5879BC

Tritanopia (blue-blind)

#009198

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f83bd;
/* rgb */ color: rgb(63, 131, 189);
/* oklch */ color: oklch(59.2% 0.113 246.9);

Tailwind

colors: {
  custom: {
    50: '#81a6d1',
    500: '#3f83bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f83bd;
$custom-light: #81a6d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83bd",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 189
  },
  "hsl": {
    "h": 207.619,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.59211,
    "c": 0.11269,
    "h": 246.9
  },
  "luminance": 0.20963
}

Semantic roles & 50–950 ramp

primary

#3F83BD

secondary

#C9AA8F

accent

#8E4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F83BD

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

Preview Lab → · Contrast checker → · Palette generator →