#3F99C8#3F99C8

#3F99C8 is a light, moderate cyan. Relative luminance 0.280; OKLCH L 64.9% C 0.110 H 234.9°. Best body text is #000000 at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F99C8
RGB	rgb(63, 153, 200)
HSL	hsl(201, 55%, 52%)
HSV	hsv(201, 69%, 78%)
CMYK	cmyk(68.5%, 23.5%, 0%, 21.6%)
CIE-LAB	lab(59.89, -11.71, -32.00)
CIE-LCH	lch(59.89, 34.07, 249.90°)
OKLab	oklab(64.91% -0.0631 -0.0899)
OKLCH	oklch(64.91% 0.11 234.9)
XYZ	xyz(23.8624, 28.0068, 58.7806)
Luminance	0.2801 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99C8 #C86E3F

analogous

#3FC8B3 #3F99C8 #3F55C8

triadic

#3F99C8 #C83F99 #99C83F

tetradic

#3F99C8 #B33FC8 #C86E3F #55C83F

square

#3F99C8 #B33FC8 #C86E3F #55C83F

split-complementary

#3F99C8 #C83F55 #C8B33F

monochromatic

#1F536D #2D769D #3F99C8 #6FB2D6 #9ECCE3

Accessibility & contrast

On white

3.18

#3F99C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.60

#3F99C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99C8

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99C8	#FFFFFF	#000000	##000000
##3F99C8	1.00	3.18	6.60	6.60
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.60	21.00	1.00	1.00
##000000	6.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8298CA

Deuteranopia (green-blind)

#708AC7

Tritanopia (blue-blind)

#00A5A9

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3f99c8;
/* rgb */ color: rgb(63, 153, 200);
/* oklch */ color: oklch(64.9% 0.110 234.9);

Tailwind

colors: {
  custom: {
    50: '#84b7d9',
    500: '#3f99c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f99c8;
$custom-light: #84b7d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99c8",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 200
  },
  "hsl": {
    "h": 200.584,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.64905,
    "c": 0.10984,
    "h": 234.9
  },
  "luminance": 0.28009
}

Semantic roles & 50–950 ramp

primary

#3F99C8

secondary

#D0A893

accent

#7C49DF

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #3F99C8

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

Preview Lab → · Contrast checker → · Palette generator →