#3F99D3#3F99D3

#3F99D3 is a light, vivid cyan. Relative luminance 0.285; OKLCH L 65.4% C 0.121 H 240.6°. Best body text is #000000 at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F99D3
RGB	rgb(63, 153, 211)
HSL	hsl(204, 63%, 54%)
HSV	hsv(204, 70%, 83%)
CMYK	cmyk(70.1%, 27.5%, 0%, 17.3%)
CIE-LAB	lab(60.37, -8.01, -37.41)
CIE-LCH	lch(60.37, 38.26, 257.92°)
OKLab	oklab(65.44% -0.0594 -0.1056)
OKLCH	oklch(65.44% 0.121 240.6)
XYZ	xyz(25.1945, 28.5396, 65.7963)
Luminance	0.2854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99D3 #D3793F

analogous

#3FD3C3 #3F99D3 #3F4FD3

triadic

#3F99D3 #D33F99 #99D33F

tetradic

#3F99D3 #C33FD3 #D3793F #4FD33F

square

#3F99D3 #C33FD3 #D3793F #4FD33F

split-complementary

#3F99D3 #D33F4F #D3C33F

monochromatic

#1C567B #2879AD #3F99D3 #71B3DE #A3CEEA

Accessibility & contrast

On white

3.13

#3F99D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.71

#3F99D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99D3

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99D3	#FFFFFF	#000000	##000000
##3F99D3	1.00	3.13	6.71	6.71
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.71	21.00	1.00	1.00
##000000	6.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E99D6

Deuteranopia (green-blind)

#6A8BD2

Tritanopia (blue-blind)

#00A7AD

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3f99d3;
/* rgb */ color: rgb(63, 153, 211);
/* oklch */ color: oklch(65.4% 0.121 240.6);

Tailwind

colors: {
  custom: {
    50: '#85b6e0',
    500: '#3f99d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f99d3;
$custom-light: #85b6e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99d3",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 211
  },
  "hsl": {
    "h": 203.514,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.65442,
    "c": 0.12114,
    "h": 240.6
  },
  "luminance": 0.28542
}

Semantic roles & 50–950 ramp

primary

#3F99D3

secondary

#D7B097

accent

#8242E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F99D3

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

Preview Lab → · Contrast checker → · Palette generator →