#3F81CE#3F81CE

#3F81CE is a mid, vivid cyan. Relative luminance 0.212; OKLCH L 59.7% C 0.136 H 254.0°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F81CE
RGB	rgb(63, 129, 206)
HSL	hsl(212, 59%, 53%)
HSV	hsv(212, 69%, 81%)
CMYK	cmyk(69.4%, 37.4%, 0%, 19.2%)
CIE-LAB	lab(53.18, 4.26, -45.93)
CIE-LCH	lch(53.18, 46.12, 275.30°)
OKLab	oklab(59.7% -0.0376 -0.1307)
OKLCH	oklch(59.7% 0.136 254)
XYZ	xyz(21.0366, 21.2113, 61.3661)
Luminance	0.2121 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F81CE #CE8C3F

analogous

#3FC8CE #3F81CE #453FCE

triadic

#3F81CE #CE3F81 #81CE3F

tetradic

#3F81CE #CE3FC8 #CE8C3F #3FCE45

square

#3F81CE #CE3FC8 #CE8C3F #3FCE45

split-complementary

#3F81CE #CE453F #C8CE3F

monochromatic

#1E4675 #2A63A6 #3F81CE #70A1DA #A1C1E7

Accessibility & contrast

On white

4.01

#3F81CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#3F81CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F81CE

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F81CE	#FFFFFF	#000000	##000000
##3F81CE	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E86D1

Deuteranopia (green-blind)

#4979CC

Tritanopia (blue-blind)

#00939E

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3f81ce;
/* rgb */ color: rgb(63, 129, 206);
/* oklch */ color: oklch(59.7% 0.136 254.0);

Tailwind

colors: {
  custom: {
    50: '#84a5dd',
    500: '#3f81ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f81ce;
$custom-light: #84a5dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f81ce",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 206
  },
  "hsl": {
    "h": 212.308,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.59704,
    "c": 0.13597,
    "h": 254
  },
  "luminance": 0.21214
}

Semantic roles & 50–950 ramp

primary

#3F81CE

secondary

#D3B795

accent

#9A45E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F81CE

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

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