#3F82CB#3F82CB

#3F82CB is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.8% C 0.131 H 252.6°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F82CB
RGB	rgb(63, 130, 203)
HSL	hsl(211, 57%, 52%)
HSV	hsv(211, 69%, 80%)
CMYK	cmyk(69%, 36%, 0%, 20.4%)
CIE-LAB	lab(53.31, 2.60, -44.02)
CIE-LCH	lch(53.31, 44.10, 273.37°)
OKLab	oklab(59.75% -0.0393 -0.1251)
OKLCH	oklch(59.75% 0.131 252.6)
XYZ	xyz(20.8080, 21.3316, 59.5091)
Luminance	0.2133 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F82CB #CB883F

analogous

#3FC8CB #3F82CB #423FCB

triadic

#3F82CB #CB3F82 #82CB3F

tetradic

#3F82CB #CB3FC8 #CB883F #3FCB42

square

#3F82CB #CB3FC8 #CB883F #3FCB42

split-complementary

#3F82CB #CB423F #C8CB3F

monochromatic

#1F4671 #2C64A1 #3F82CB #6FA1D8 #9FC1E5

Accessibility & contrast

On white

3.99

#3F82CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#3F82CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F82CB

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F82CB	#FFFFFF	#000000	##000000
##3F82CB	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6187CE

Deuteranopia (green-blind)

#4D79CA

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3f82cb;
/* rgb */ color: rgb(63, 130, 203);
/* oklch */ color: oklch(59.8% 0.131 252.6);

Tailwind

colors: {
  custom: {
    50: '#83a5db',
    500: '#3f82cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f82cb;
$custom-light: #83a5db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f82cb",
  "rgb": {
    "r": 63,
    "g": 130,
    "b": 203
  },
  "hsl": {
    "h": 211.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.59754,
    "c": 0.1311,
    "h": 252.6
  },
  "luminance": 0.21334
}

Semantic roles & 50–950 ramp

primary

#3F82CB

secondary

#D1B494

accent

#9747E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F82CB

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

Preview Lab → · Contrast checker → · Palette generator →