#3F7FCC#3F7FCC

#3F7FCC is a mid, vivid cyan. Relative luminance 0.206; OKLCH L 59.1% C 0.135 H 254.5°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FCC
RGB	rgb(63, 127, 204)
HSL	hsl(213, 58%, 52%)
HSV	hsv(213, 69%, 80%)
CMYK	cmyk(69.1%, 37.7%, 0%, 20%)
CIE-LAB	lab(52.50, 4.76, -45.87)
CIE-LCH	lch(52.50, 46.12, 275.92°)
OKLab	oklab(59.14% -0.0361 -0.1305)
OKLCH	oklch(59.14% 0.135 254.5)
XYZ	xyz(20.5344, 20.5930, 60.0077)
Luminance	0.2059 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FCC #CC8C3F

analogous

#3FC6CC #3F7FCC #453FCC

triadic

#3F7FCC #CC3F7F #7FCC3F

tetradic

#3F7FCC #CC3FC6 #CC8C3F #3FCC45

square

#3F7FCC #CC3FC6 #CC8C3F #3FCC45

split-complementary

#3F7FCC #CC453F #C6CC3F

monochromatic

#1E4472 #2B61A3 #3F7FCC #6F9FD9 #A0BFE6

Accessibility & contrast

On white

4.10

#3F7FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#3F7FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FCC

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FCC	#FFFFFF	#000000	##000000
##3F7FCC	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C84CF

Deuteranopia (green-blind)

#4777CA

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f7fcc;
/* rgb */ color: rgb(63, 127, 204);
/* oklch */ color: oklch(59.1% 0.135 254.5);

Tailwind

colors: {
  custom: {
    50: '#84a3dc',
    500: '#3f7fcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fcc;
$custom-light: #84a3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fcc",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 212.766,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.59139,
    "c": 0.13545,
    "h": 254.5
  },
  "luminance": 0.20595
}

Semantic roles & 50–950 ramp

primary

#3F7FCC

secondary

#D2B695

accent

#9B47E1

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F7FCC

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

Preview Lab → · Contrast checker → · Palette generator →