#3F9EB3#3F9EB3

#3F9EB3 is a light, moderate cyan. Relative luminance 0.288; OKLCH L 65.2% C 0.093 H 214.9°. Best body text is #000000 at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F9EB3
RGB	rgb(63, 158, 179)
HSL	hsl(191, 48%, 47%)
HSV	hsv(191, 65%, 70%)
CMYK	cmyk(64.8%, 11.7%, 0%, 29.8%)
CIE-LAB	lab(60.57, -21.16, -19.14)
CIE-LCH	lch(60.57, 28.53, 222.13°)
OKLab	oklab(65.18% -0.0762 -0.0532)
OKLCH	oklch(65.18% 0.093 214.9)
XYZ	xyz(22.4101, 28.7628, 47.0098)
Luminance	0.2877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9EB3 #B3543F

analogous

#3FB38E #3F9EB3 #3F64B3

triadic

#3F9EB3 #B33F9E #9EB33F

tetradic

#3F9EB3 #8E3FB3 #B3543F #64B33F

square

#3F9EB3 #8E3FB3 #B3543F #64B33F

split-complementary

#3F9EB3 #B33F64 #B38E3F

monochromatic

#1F4E58 #2F7686 #3F9EB3 #66B7C9 #93CCD9

Accessibility & contrast

On white

3.11

#3F9EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.75

#3F9EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9EB3

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9EB3	#FFFFFF	#000000	##000000
##3F9EB3	1.00	3.11	6.75	6.75
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.75	21.00	1.00	1.00
##000000	6.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F99B4

Deuteranopia (green-blind)

#7E8DB3

Tritanopia (blue-blind)

#00A6A4

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3f9eb3;
/* rgb */ color: rgb(63, 158, 179);
/* oklch */ color: oklch(65.2% 0.093 214.9);

Tailwind

colors: {
  custom: {
    50: '#81bbc9',
    500: '#3f9eb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f9eb3;
$custom-light: #81bbc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9eb3",
  "rgb": {
    "r": 63,
    "g": 158,
    "b": 179
  },
  "hsl": {
    "h": 190.862,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.65175,
    "c": 0.09293,
    "h": 214.9
  },
  "luminance": 0.28765
}

Semantic roles & 50–950 ramp

primary

#3F9EB3

secondary

#C49489

accent

#6950D8

background

#F8FBFC

surface

#F0F6F8

border

#CBD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3F9EB3

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

Preview Lab → · Contrast checker → · Palette generator →