#3F81AF#3F81AF

#3F81AF is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.0% C 0.098 H 241.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F81AF
RGB	rgb(63, 129, 175)
HSL	hsl(205, 47%, 47%)
HSV	hsv(205, 64%, 69%)
CMYK	cmyk(64%, 26.3%, 0%, 31.4%)
CIE-LAB	lab(51.67, -6.49, -30.58)
CIE-LCH	lch(51.67, 31.26, 258.01°)
OKLab	oklab(58.02% -0.0465 -0.086)
OKLCH	oklch(58.02% 0.098 241.6)
XYZ	xyz(17.6351, 19.8507, 43.4513)
Luminance	0.1985 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F81AF #AF6D3F

analogous

#3FAFA5 #3F81AF #3F49AF

triadic

#3F81AF #AF3F81 #81AF3F

tetradic

#3F81AF #A53FAF #AF6D3F #49AF3F

square

#3F81AF #A53FAF #AF6D3F #49AF3F

split-complementary

#3F81AF #AF3F49 #AFA53F

monochromatic

#1F3F55 #2F6082 #3F81AF #649EC7 #91BAD7

Accessibility & contrast

On white

4.23

#3F81AF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3F81AF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F81AF

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F81AF	#FFFFFF	#000000	##000000
##3F81AF	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C81B1

Deuteranopia (green-blind)

#5D76AE

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f81af;
/* rgb */ color: rgb(63, 129, 175);
/* oklch */ color: oklch(58.0% 0.098 241.6);

Tailwind

colors: {
  custom: {
    50: '#7fa5c7',
    500: '#3f81af',
    950: '#000000',
  },
}

SCSS

$custom: #3f81af;
$custom-light: #7fa5c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f81af",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 175
  },
  "hsl": {
    "h": 204.643,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5802,
    "c": 0.09777,
    "h": 241.6
  },
  "luminance": 0.19852
}

Semantic roles & 50–950 ramp

primary

#3F81AF

secondary

#C3A087

accent

#8851D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F81AF

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

Preview Lab → · Contrast checker → · Palette generator →