#3F9BBC#3F9BBC

#3F9BBC is a light, moderate cyan. Relative luminance 0.281; OKLCH L 64.8% C 0.099 H 225.2°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BBC
RGB	rgb(63, 155, 188)
HSL	hsl(196, 50%, 49%)
HSV	hsv(196, 66%, 74%)
CMYK	cmyk(66.5%, 17.6%, 0%, 26.3%)
CIE-LAB	lab(60.00, -16.73, -25.08)
CIE-LCH	lch(60.00, 30.15, 236.30°)
OKLab	oklab(64.83% -0.0695 -0.0701)
OKLCH	oklch(64.83% 0.099 225.2)
XYZ	xyz(22.8447, 28.1278, 51.7925)
Luminance	0.2813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BBC #BC603F

analogous

#3FBC9F #3F9BBC #3F5DBC

triadic

#3F9BBC #BC3F9B #9BBC3F

tetradic

#3F9BBC #9F3FBC #BC603F #5DBC3F

square

#3F9BBC #9F3FBC #BC603F #5DBC3F

split-complementary

#3F9BBC #BC3F5D #BC9F3F

monochromatic

#204F60 #30758E #3F9BBC #6BB3CD #99CBDD

Accessibility & contrast

On white

3.17

#3F9BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.63

#3F9BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BBC

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BBC	#FFFFFF	#000000	##000000
##3F9BBC	1.00	3.17	6.63	6.63
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.63	21.00	1.00	1.00
##000000	6.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BE

Deuteranopia (green-blind)

#778BBC

Tritanopia (blue-blind)

#00A5A6

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #3f9bbc;
/* rgb */ color: rgb(63, 155, 188);
/* oklch */ color: oklch(64.8% 0.099 225.2);

Tailwind

colors: {
  custom: {
    50: '#82b8d0',
    500: '#3f9bbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bbc;
$custom-light: #82b8d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bbc",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 188
  },
  "hsl": {
    "h": 195.84,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.64832,
    "c": 0.09869,
    "h": 225.2
  },
  "luminance": 0.2813
}

Semantic roles & 50–950 ramp

primary

#3F9BBC

secondary

#C99E8E

accent

#734ED9

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #3F9BBC

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

Preview Lab → · Contrast checker → · Palette generator →