#3F99B2#3F99B2

#3F99B2 is a light, moderate cyan. Relative luminance 0.271; OKLCH L 63.9% C 0.092 H 219.3°. Best body text is #000000 at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F99B2
RGB	rgb(63, 153, 178)
HSL	hsl(193, 48%, 47%)
HSV	hsv(193, 65%, 70%)
CMYK	cmyk(64.6%, 14%, 0%, 30.2%)
CIE-LAB	lab(59.02, -18.84, -20.94)
CIE-LCH	lch(59.02, 28.17, 228.02°)
OKLab	oklab(63.92% -0.0713 -0.0583)
OKLCH	oklch(63.92% 0.092 219.3)
XYZ	xyz(21.4737, 27.0513, 46.2006)
Luminance	0.2705 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99B2 #B2583F

analogous

#3FB291 #3F99B2 #3F60B2

triadic

#3F99B2 #B23F99 #99B23F

tetradic

#3F99B2 #913FB2 #B2583F #60B23F

square

#3F99B2 #913FB2 #B2583F #60B23F

split-complementary

#3F99B2 #B23F60 #B2913F

monochromatic

#1F4B58 #2F7285 #3F99B2 #66B3C9 #93C9D9

Accessibility & contrast

On white

3.28

#3F99B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.41

#3F99B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99B2

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99B2	#FFFFFF	#000000	##000000
##3F99B2	1.00	3.28	6.41	6.41
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.41	21.00	1.00	1.00
##000000	6.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8995B3

Deuteranopia (green-blind)

#7989B2

Tritanopia (blue-blind)

#00A1A1

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3f99b2;
/* rgb */ color: rgb(63, 153, 178);
/* oklch */ color: oklch(63.9% 0.092 219.3);

Tailwind

colors: {
  custom: {
    50: '#81b7c9',
    500: '#3f99b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f99b2;
$custom-light: #81b7c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99b2",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 178
  },
  "hsl": {
    "h": 193.043,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.63919,
    "c": 0.09207,
    "h": 219.3
  },
  "luminance": 0.27054
}

Semantic roles & 50–950 ramp

primary

#3F99B2

secondary

#C49689

accent

#6E50D7

background

#F8FBFC

surface

#F0F6F8

border

#CBD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3F99B2

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

Preview Lab → · Contrast checker → · Palette generator →