#3F7CBC#3F7CBC

#3F7CBC is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.118 H 251.5°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CBC
RGB	rgb(63, 124, 188)
HSL	hsl(211, 50%, 49%)
HSV	hsv(211, 66%, 74%)
CMYK	cmyk(66.5%, 34%, 0%, 26.3%)
CIE-LAB	lab(50.81, 0.93, -39.41)
CIE-LCH	lch(50.81, 39.43, 271.35°)
OKLab	oklab(57.54% -0.0373 -0.1117)
OKLCH	oklch(57.54% 0.118 251.5)
XYZ	xyz(18.3313, 19.1010, 50.2880)
Luminance	0.1910 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CBC #BC7F3F

analogous

#3FBBBC #3F7CBC #413FBC

triadic

#3F7CBC #BC3F7C #7CBC3F

tetradic

#3F7CBC #BC3FBB #BC7F3F #3FBC41

square

#3F7CBC #BC3FBB #BC7F3F #3FBC41

split-complementary

#3F7CBC #BC413F #BBBC3F

monochromatic

#204060 #305E8E #3F7CBC #6B9BCD #99BADD

Accessibility & contrast

On white

4.36

#3F7CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#3F7CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CBC

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CBC	#FFFFFF	#000000	##000000
##3F7CBC	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6080BF

Deuteranopia (green-blind)

#4E74BB

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7cbc;
/* rgb */ color: rgb(63, 124, 188);
/* oklch */ color: oklch(57.5% 0.118 251.5);

Tailwind

colors: {
  custom: {
    50: '#81a1d0',
    500: '#3f7cbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cbc;
$custom-light: #81a1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cbc",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 188
  },
  "hsl": {
    "h": 210.72,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57543,
    "c": 0.11777,
    "h": 251.5
  },
  "luminance": 0.19103
}

Semantic roles & 50–950 ramp

primary

#3F7CBC

secondary

#C9AC8E

accent

#964ED9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7CBC

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

Preview Lab → · Contrast checker → · Palette generator →