#3F83C8#3F83C8

#3F83C8 is a mid, vivid cyan. Relative luminance 0.215; OKLCH L 59.8% C 0.126 H 251.0°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3F83C8
RGB	rgb(63, 131, 200)
HSL	hsl(210, 55%, 52%)
HSV	hsv(210, 69%, 78%)
CMYK	cmyk(68.5%, 34.5%, 0%, 21.6%)
CIE-LAB	lab(53.45, 0.94, -42.10)
CIE-LCH	lch(53.45, 42.11, 271.28°)
OKLab	oklab(59.81% -0.0411 -0.1195)
OKLCH	oklch(59.81% 0.126 251)
XYZ	xyz(20.5877, 21.4573, 57.6891)
Luminance	0.2146 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83C8 #C8843F

analogous

#3FC8C8 #3F83C8 #403FC8

triadic

#3F83C8 #C83F83 #83C83F

tetradic

#3F83C8 #C83FC8 #C8843F #3FC840

square

#3F83C8 #C83FC8 #C8843F #3FC840

split-complementary

#3F83C8 #C8403F #C8C83F

monochromatic

#1F466D #2D649D #3F83C8 #6FA2D6 #9EC0E3

Accessibility & contrast

On white

3.97

#3F83C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#3F83C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83C8

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83C8	#FFFFFF	#000000	##000000
##3F83C8	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6487CB

Deuteranopia (green-blind)

#517AC7

Tritanopia (blue-blind)

#00939C

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f83c8;
/* rgb */ color: rgb(63, 131, 200);
/* oklch */ color: oklch(59.8% 0.126 251.0);

Tailwind

colors: {
  custom: {
    50: '#83a6d9',
    500: '#3f83c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f83c8;
$custom-light: #83a6d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83c8",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 200
  },
  "hsl": {
    "h": 210.219,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.59811,
    "c": 0.12632,
    "h": 251
  },
  "luminance": 0.21459
}

Semantic roles & 50–950 ramp

primary

#3F83C8

secondary

#D0B293

accent

#9449DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C0F14

muted

#7D7F83

Preview Lab

Preview with #3F83C8

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

Preview Lab → · Contrast checker → · Palette generator →