#1B99BB#1B99BB

#1B99BB is a light, moderate cyan. Relative luminance 0.266; OKLCH L 63.5% C 0.112 H 222.1°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#1B99BB
RGB	rgb(27, 153, 187)
HSL	hsl(193, 75%, 42%)
HSV	hsv(193, 86%, 73%)
CMYK	cmyk(85.6%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(58.60, -20.21, -26.74)
CIE-LCH	lch(58.60, 33.52, 232.92°)
OKLab	oklab(63.48% -0.083 -0.075)
OKLCH	oklch(63.48% 0.112 222.1)
XYZ	xyz(20.8091, 26.6006, 51.0418)
Luminance	0.2660 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B99BB #BB3D1B

analogous

#1BBB8D #1B99BB #1B49BB

triadic

#1B99BB #BB1B99 #99BB1B

tetradic

#1B99BB #8D1BBB #BB3D1B #49BB1B

square

#1B99BB #8D1BBB #BB3D1B #49BB1B

split-complementary

#1B99BB #BB1B49 #BB8D1B

monochromatic

#0C4150 #136D86 #1B99BB #32BCE1 #67CEE9

Accessibility & contrast

On white

3.32

#1B99BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.32

#1B99BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B99BB

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B99BB	#FFFFFF	#000000	##000000
##1B99BB	1.00	3.32	6.32	6.32
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.32	21.00	1.00	1.00
##000000	6.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8595BD

Deuteranopia (green-blind)

#7187BB

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #1b99bb;
/* rgb */ color: rgb(27, 153, 187);
/* oklch */ color: oklch(63.5% 0.112 222.1);

Tailwind

colors: {
  custom: {
    50: '#77b7cf',
    500: '#1b99bb',
    950: '#000000',
  },
}

SCSS

$custom: #1b99bb;
$custom-light: #77b7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b99bb",
  "rgb": {
    "r": 27,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 192.75,
    "s": 74.766,
    "l": 41.961
  },
  "oklch": {
    "l": 0.63479,
    "c": 0.11187,
    "h": 222.1
  },
  "luminance": 0.26603
}

Semantic roles & 50–950 ramp

primary

#1B99BB

secondary

#CE7A63

accent

#5E36F1

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1B99BB

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

Preview Lab → · Contrast checker → · Palette generator →