#3F81AE#3F81AE

#3F81AE is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.0% C 0.097 H 241.0°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F81AE
RGB	rgb(63, 129, 174)
HSL	hsl(204, 47%, 46%)
HSV	hsv(204, 64%, 68%)
CMYK	cmyk(63.8%, 25.9%, 0%, 31.8%)
CIE-LAB	lab(51.62, -6.83, -30.07)
CIE-LCH	lch(51.62, 30.84, 257.20°)
OKLab	oklab(57.97% -0.0468 -0.0845)
OKLCH	oklch(57.97% 0.097 241)
XYZ	xyz(17.5372, 19.8115, 42.9360)
Luminance	0.1981 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F81AE #AE6C3F

analogous

#3FAEA4 #3F81AE #3F4AAE

triadic

#3F81AE #AE3F81 #81AE3F

tetradic

#3F81AE #A43FAE #AE6C3F #4AAE3F

square

#3F81AE #A43FAE #AE6C3F #4AAE3F

split-complementary

#3F81AE #AE3F4A #AEA43F

monochromatic

#1E3E54 #2F6081 #3F81AE #649EC7 #90BAD7

Accessibility & contrast

On white

4.23

#3F81AE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3F81AE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F81AE

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F81AE	#FFFFFF	#000000	##000000
##3F81AE	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D81B0

Deuteranopia (green-blind)

#5E76AD

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f81ae;
/* rgb */ color: rgb(63, 129, 174);
/* oklch */ color: oklch(58.0% 0.097 241.0);

Tailwind

colors: {
  custom: {
    50: '#7fa5c6',
    500: '#3f81ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f81ae;
$custom-light: #7fa5c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f81ae",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 174
  },
  "hsl": {
    "h": 204.324,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.5797,
    "c": 0.09664,
    "h": 241
  },
  "luminance": 0.19813
}

Semantic roles & 50–950 ramp

primary

#3F81AE

secondary

#C29F87

accent

#8751D6

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F81AE

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

Preview Lab → · Contrast checker → · Palette generator →