#3F84B3#3F84B3

#3F84B3 is a mid, moderate cyan. Relative luminance 0.208; OKLCH L 58.9% C 0.100 H 241.1°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3F84B3
RGB	rgb(63, 132, 179)
HSL	hsl(204, 48%, 47%)
HSV	hsv(204, 65%, 70%)
CMYK	cmyk(64.8%, 26.3%, 0%, 29.8%)
CIE-LAB	lab(52.74, -6.88, -31.20)
CIE-LCH	lch(52.74, 31.95, 257.56°)
OKLab	oklab(58.93% -0.0484 -0.0878)
OKLCH	oklch(58.93% 0.1 241.1)
XYZ	xyz(18.4348, 20.8121, 45.6847)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F84B3 #B36E3F

analogous

#3FB3A8 #3F84B3 #3F4AB3

triadic

#3F84B3 #B33F84 #84B33F

tetradic

#3F84B3 #A83FB3 #B36E3F #4AB33F

square

#3F84B3 #A83FB3 #B36E3F #4AB33F

split-complementary

#3F84B3 #B33F4A #B3A83F

monochromatic

#1F4158 #2F6386 #3F84B3 #66A1C9 #93BDD9

Accessibility & contrast

On white

4.07

#3F84B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#3F84B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F84B3

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F84B3	#FFFFFF	#000000	##000000
##3F84B3	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)

#6F84B5

Deuteranopia (green-blind)

#5F79B2

Tritanopia (blue-blind)

#009094

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f84b3;
/* rgb */ color: rgb(63, 132, 179);
/* oklch */ color: oklch(58.9% 0.100 241.1);

Tailwind

colors: {
  custom: {
    50: '#80a7ca',
    500: '#3f84b3',
    950: '#000000',
  },
}

SCSS

$custom: #3f84b3;
$custom-light: #80a7ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f84b3",
  "rgb": {
    "r": 63,
    "g": 132,
    "b": 179
  },
  "hsl": {
    "h": 204.31,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.58929,
    "c": 0.10024,
    "h": 241.1
  },
  "luminance": 0.20814
}

Semantic roles & 50–950 ramp

primary

#3F84B3

secondary

#C4A189

accent

#8750D8

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F84B3

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

Preview Lab → · Contrast checker → · Palette generator →