#3F99C9#3F99C9

#3F99C9 is a light, moderate cyan. Relative luminance 0.281; OKLCH L 65.0% C 0.111 H 235.5°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX#3F99C9
RGBrgb(63, 153, 201)
HSLhsl(201, 56%, 52%)
HSVhsv(201, 69%, 79%)
CMYKcmyk(68.7%, 23.9%, 0%, 21.2%)
CIE-LABlab(59.94, -11.38, -32.49)
CIE-LCHlch(59.94, 34.43, 250.70°)
OKLaboklab(64.95% -0.0627 -0.0913)
OKLCHoklch(64.95% 0.111 235.5)
XYZxyz(23.9796, 28.0537, 59.3981)
Luminance0.2806 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F99C9 #C96F3F
analogous
#3FC9B4 #3F99C9 #3F54C9
triadic
#3F99C9 #C93F99 #99C93F
tetradic
#3F99C9 #B43FC9 #C96F3F #54C93F
square
#3F99C9 #B43FC9 #C96F3F #54C93F
split-complementary
#3F99C9 #C93F54 #C9B43F
monochromatic
#1F536F #2D779E #3F99C9 #6FB2D6 #9FCCE4

Accessibility & contrast

On white

3.18
#3F99C9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.61
#3F99C9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99C9
6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F99C9#FFFFFF#000000##000000
##3F99C91.003.186.616.61
#FFFFFF3.181.0021.0021.00
#0000006.6121.001.001.00
##0000006.6121.001.001.00

Color blindness preview

Protanopia (red-blind)
#8298CB
Deuteranopia (green-blind)
#6F8AC8
Tritanopia (blue-blind)
#00A6A9
Achromatopsia (no color)
#909090

Design tokens & code

CSS
--color: #3f99c9;
/* rgb */ color: rgb(63, 153, 201);
/* oklch */ color: oklch(65.0% 0.111 235.5);
Tailwind
colors: {
  custom: {
    50: '#84b7d9',
    500: '#3f99c9',
    950: '#000000',
  },
}
SCSS
$custom: #3f99c9;
$custom-light: #84b7d9;
$custom-dark: #000000;
JSON
{
  "hex": "#3f99c9",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 201
  },
  "hsl": {
    "h": 200.87,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.64953,
    "c": 0.11082,
    "h": 235.5
  },
  "luminance": 0.28056
}

Semantic roles & 50–950 ramp

primary
#3F99C9
secondary
#D0A994
accent
#7D48DF
background
#F8FBFD
surface
#F0F6FA
border
#CBD0D3
text
#0C1114
muted
#7D8083

Preview Lab

Preview with #3F99C9

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

Preview Lab → · Contrast checker → · Palette generator →

#3F99C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva