#3F80CB#3F80CB

#3F80CB is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.3% C 0.133 H 253.7°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3F80CB
RGB	rgb(63, 128, 203)
HSL	hsl(212, 57%, 52%)
HSV	hsv(212, 69%, 80%)
CMYK	cmyk(69%, 36.9%, 0%, 20.4%)
CIE-LAB	lab(52.74, 3.80, -44.93)
CIE-LCH	lch(52.74, 45.09, 274.83°)
OKLab	oklab(59.31% -0.0373 -0.1278)
OKLCH	oklch(59.31% 0.133 253.7)
XYZ	xyz(20.5446, 20.8047, 59.4213)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F80CB #CB8A3F

analogous

#3FC6CB #3F80CB #443FCB

triadic

#3F80CB #CB3F80 #80CB3F

tetradic

#3F80CB #CB3FC6 #CB8A3F #3FCB44

square

#3F80CB #CB3FC6 #CB8A3F #3FCB44

split-complementary

#3F80CB #CB443F #C6CB3F

monochromatic

#1F4571 #2C62A1 #3F80CB #6FA0D8 #9FC0E5

Accessibility & contrast

On white

4.07

#3F80CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#3F80CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F80CB

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F80CB	#FFFFFF	#000000	##000000
##3F80CB	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E85CE

Deuteranopia (green-blind)

#4A78C9

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f80cb;
/* rgb */ color: rgb(63, 128, 203);
/* oklch */ color: oklch(59.3% 0.133 253.7);

Tailwind

colors: {
  custom: {
    50: '#83a4db',
    500: '#3f80cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f80cb;
$custom-light: #83a4db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f80cb",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 203
  },
  "hsl": {
    "h": 212.143,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.59305,
    "c": 0.13312,
    "h": 253.7
  },
  "luminance": 0.20807
}

Semantic roles & 50–950 ramp

primary

#3F80CB

secondary

#D1B594

accent

#9947E1

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F80CB

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

Preview Lab → · Contrast checker → · Palette generator →