#1B99BC#1B99BC

#1B99BC is a light, moderate cyan. Relative luminance 0.266; OKLCH L 63.5% C 0.113 H 222.8°. Best body text is #000000 at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B99BC
RGB	rgb(27, 153, 188)
HSL	hsl(193, 75%, 42%)
HSV	hsv(193, 86%, 74%)
CMYK	cmyk(85.6%, 18.6%, 0%, 26.3%)
CIE-LAB	lab(58.64, -19.87, -27.24)
CIE-LCH	lch(58.64, 33.72, 233.90°)
OKLab	oklab(63.52% -0.0826 -0.0765)
OKLCH	oklch(63.52% 0.113 222.8)
XYZ	xyz(20.9165, 26.6436, 51.6075)
Luminance	0.2665 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B99BC #BC3E1B

analogous

#1BBC8E #1B99BC #1B49BC

triadic

#1B99BC #BC1B99 #99BC1B

tetradic

#1B99BC #8E1BBC #BC3E1B #49BC1B

square

#1B99BC #8E1BBC #BC3E1B #49BC1B

split-complementary

#1B99BC #BC1B49 #BC8E1B

monochromatic

#0C4251 #136D86 #1B99BC #33BCE2 #68CDE9

Accessibility & contrast

On white

3.32

#1B99BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.33

#1B99BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B99BC

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B99BC	#FFFFFF	#000000	##000000
##1B99BC	1.00	3.32	6.33	6.33
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.33	21.00	1.00	1.00
##000000	6.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8595BE

Deuteranopia (green-blind)

#7087BC

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #1b99bc;
/* rgb */ color: rgb(27, 153, 188);
/* oklch */ color: oklch(63.5% 0.113 222.8);

Tailwind

colors: {
  custom: {
    50: '#77b7d0',
    500: '#1b99bc',
    950: '#000000',
  },
}

SCSS

$custom: #1b99bc;
$custom-light: #77b7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b99bc",
  "rgb": {
    "r": 27,
    "g": 153,
    "b": 188
  },
  "hsl": {
    "h": 193.043,
    "s": 74.884,
    "l": 42.157
  },
  "oklch": {
    "l": 0.63524,
    "c": 0.11256,
    "h": 222.8
  },
  "luminance": 0.26646
}

Semantic roles & 50–950 ramp

primary

#1B99BC

secondary

#CF7B64

accent

#5F36F2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0A1114

muted

#7C8082

Preview Lab

Preview with #1B99BC

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

Preview Lab → · Contrast checker → · Palette generator →