#3F81D7#3F81D7

#3F81D7 is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.2% C 0.148 H 256.1°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F81D7
RGB	rgb(63, 129, 215)
HSL	hsl(214, 66%, 55%)
HSV	hsv(214, 71%, 84%)
CMYK	cmyk(70.7%, 40%, 0%, 15.7%)
CIE-LAB	lab(53.67, 7.46, -50.24)
CIE-LCH	lch(53.67, 50.79, 278.45°)
OKLab	oklab(60.24% -0.0355 -0.1433)
OKLCH	oklch(60.24% 0.148 256.1)
XYZ	xyz(22.1614, 21.6612, 67.2899)
Luminance	0.2166 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F81D7 #D7953F

analogous

#3FCDD7 #3F81D7 #493FD7

triadic

#3F81D7 #D73F81 #81D73F

tetradic

#3F81D7 #D73FCD #D7953F #3FD749

square

#3F81D7 #D73FCD #D7953F #3FD749

split-complementary

#3F81D7 #D7493F #CDD73F

monochromatic

#1B4781 #2563B3 #3F81D7 #72A2E2 #A4C3EC

Accessibility & contrast

On white

3.94

#3F81D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#3F81D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F81D7

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F81D7	#FFFFFF	#000000	##000000
##3F81D7	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5988DA

Deuteranopia (green-blind)

#417AD5

Tritanopia (blue-blind)

#0095A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f81d7;
/* rgb */ color: rgb(63, 129, 215);
/* oklch */ color: oklch(60.2% 0.148 256.1);

Tailwind

colors: {
  custom: {
    50: '#86a5e4',
    500: '#3f81d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f81d7;
$custom-light: #86a5e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f81d7",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 215
  },
  "hsl": {
    "h": 213.947,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.6024,
    "c": 0.14766,
    "h": 256.1
  },
  "luminance": 0.21664
}

Semantic roles & 50–950 ramp

primary

#3F81D7

secondary

#D9BD99

accent

#9F3FE8

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C0F15

muted

#7D7F84

Preview Lab

Preview with #3F81D7

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

Preview Lab → · Contrast checker → · Palette generator →