#3F99BD#3F99BD

#3F99BD is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.4% C 0.100 H 227.9°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F99BD
RGB	rgb(63, 153, 189)
HSL	hsl(197, 50%, 49%)
HSV	hsv(197, 67%, 74%)
CMYK	cmyk(66.7%, 19%, 0%, 25.9%)
CIE-LAB	lab(59.44, -15.33, -26.51)
CIE-LCH	lch(59.44, 30.62, 239.96°)
OKLab	oklab(64.4% -0.067 -0.0741)
OKLCH	oklch(64.4% 0.1 227.9)
XYZ	xyz(22.6228, 27.5109, 52.2521)
Luminance	0.2751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99BD #BD633F

analogous

#3FBDA2 #3F99BD #3F5ABD

triadic

#3F99BD #BD3F99 #99BD3F

tetradic

#3F99BD #A23FBD #BD633F #5ABD3F

square

#3F99BD #A23FBD #BD633F #5ABD3F

split-complementary

#3F99BD #BD3F5A #BDA23F

monochromatic

#204F61 #30748F #3F99BD #6BB2CE #99CADD

Accessibility & contrast

On white

3.23

#3F99BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#3F99BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99BD

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99BD	#FFFFFF	#000000	##000000
##3F99BD	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BF

Deuteranopia (green-blind)

#758ABD

Tritanopia (blue-blind)

#00A3A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3f99bd;
/* rgb */ color: rgb(63, 153, 189);
/* oklch */ color: oklch(64.4% 0.100 227.9);

Tailwind

colors: {
  custom: {
    50: '#82b7d1',
    500: '#3f99bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f99bd;
$custom-light: #82b7d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99bd",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 189
  },
  "hsl": {
    "h": 197.143,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.64397,
    "c": 0.09996,
    "h": 227.9
  },
  "luminance": 0.27513
}

Semantic roles & 50–950 ramp

primary

#3F99BD

secondary

#C99F8F

accent

#764EDA

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #3F99BD

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

Preview Lab → · Contrast checker → · Palette generator →