#3F81D2#3F81D2

#3F81D2 is a mid, vivid cyan. Relative luminance 0.214; OKLCH L 59.9% C 0.141 H 255.0°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F81D2
RGB	rgb(63, 129, 210)
HSL	hsl(213, 62%, 54%)
HSV	hsv(213, 70%, 82%)
CMYK	cmyk(70%, 38.6%, 0%, 17.6%)
CIE-LAB	lab(53.39, 5.68, -47.85)
CIE-LCH	lch(53.39, 48.19, 276.77°)
OKLab	oklab(59.94% -0.0366 -0.1363)
OKLCH	oklch(59.94% 0.141 255)
XYZ	xyz(21.5287, 21.4081, 63.9578)
Luminance	0.2141 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F81D2 #D2903F

analogous

#3FCAD2 #3F81D2 #463FD2

triadic

#3F81D2 #D23F81 #81D23F

tetradic

#3F81D2 #D23FCA #D2903F #3FD246

square

#3F81D2 #D23FCA #D2903F #3FD246

split-complementary

#3F81D2 #D2463F #CAD23F

monochromatic

#1D477A #2863AC #3F81D2 #71A2DE #A2C2E9

Accessibility & contrast

On white

3.98

#3F81D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#3F81D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F81D2

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F81D2	#FFFFFF	#000000	##000000
##3F81D2	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C87D5

Deuteranopia (green-blind)

#4579D0

Tritanopia (blue-blind)

#00949F

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f81d2;
/* rgb */ color: rgb(63, 129, 210);
/* oklch */ color: oklch(59.9% 0.141 255.0);

Tailwind

colors: {
  custom: {
    50: '#85a5e0',
    500: '#3f81d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f81d2;
$custom-light: #85a5e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f81d2",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 210
  },
  "hsl": {
    "h": 213.061,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59939,
    "c": 0.14116,
    "h": 255
  },
  "luminance": 0.2141
}

Semantic roles & 50–950 ramp

primary

#3F81D2

secondary

#D6BA97

accent

#9C43E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F81D2

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

Preview Lab → · Contrast checker → · Palette generator →