#3B9BBB#3B9BBB

#3B9BBB is a light, moderate cyan. Relative luminance 0.280; OKLCH L 64.7% C 0.100 H 223.8°. Best body text is #000000 at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#3B9BBB
RGB	rgb(59, 155, 187)
HSL	hsl(195, 52%, 48%)
HSV	hsv(195, 68%, 73%)
CMYK	cmyk(68.4%, 17.1%, 0%, 26.7%)
CIE-LAB	lab(59.85, -17.68, -24.76)
CIE-LCH	lch(59.85, 30.43, 234.47°)
OKLab	oklab(64.66% -0.0721 -0.0692)
OKLCH	oklch(64.66% 0.1 223.8)
XYZ	xyz(22.4910, 27.9579, 51.2152)
Luminance	0.2796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B9BBB #BB5B3B

analogous

#3BBB9B #3B9BBB #3B5BBB

triadic

#3B9BBB #BB3B9B #9BBB3B

tetradic

#3B9BBB #9B3BBB #BB5B3B #5BBB3B

square

#3B9BBB #9B3BBB #BB5B3B #5BBB3B

split-complementary

#3B9BBB #BB3B5B #BB9B3B

monochromatic

#1E4E5E #2C748C #3B9BBB #65B4CE #93CBDD

Accessibility & contrast

On white

3.19

#3B9BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.59

#3B9BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B9BBB

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B9BBB	#FFFFFF	#000000	##000000
##3B9BBB	1.00	3.19	6.59	6.59
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.59	21.00	1.00	1.00
##000000	6.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BD

Deuteranopia (green-blind)

#778BBB

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3b9bbb;
/* rgb */ color: rgb(59, 155, 187);
/* oklch */ color: oklch(64.7% 0.100 223.8);

Tailwind

colors: {
  custom: {
    50: '#80b8cf',
    500: '#3b9bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3b9bbb;
$custom-light: #80b8cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3b9bbb",
  "rgb": {
    "r": 59,
    "g": 155,
    "b": 187
  },
  "hsl": {
    "h": 195,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.64664,
    "c": 0.09994,
    "h": 223.8
  },
  "luminance": 0.2796
}

Semantic roles & 50–950 ramp

primary

#3B9BBB

secondary

#C8998A

accent

#704CDB

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3B9BBB

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

Preview Lab → · Contrast checker → · Palette generator →