#1B8BB0#1B8BB0

#1B8BB0 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.5% C 0.108 H 226.6°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B8BB0
RGB	rgb(27, 139, 176)
HSL	hsl(195, 73%, 40%)
HSV	hsv(195, 85%, 69%)
CMYK	cmyk(84.7%, 21%, 0%, 31%)
CIE-LAB	lab(53.85, -16.52, -27.84)
CIE-LCH	lch(53.85, 32.37, 239.31°)
OKLab	oklab(59.51% -0.0741 -0.0783)
OKLCH	oklch(59.51% 0.108 226.6)
XYZ	xyz(17.5178, 21.8306, 44.3563)
Luminance	0.2183 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B8BB0 #B0401B

analogous

#1BB08A #1B8BB0 #1B41B0

triadic

#1B8BB0 #B01B8B #8BB01B

tetradic

#1B8BB0 #8A1BB0 #B0401B #41B01B

square

#1B8BB0 #8A1BB0 #B0401B #41B01B

split-complementary

#1B8BB0 #B01B41 #B08A1B

monochromatic

#0B3746 #13617B #1B8BB0 #2AB2DE #5FC5E6

Accessibility & contrast

On white

3.91

#1B8BB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#1B8BB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B8BB0

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B8BB0	#FFFFFF	#000000	##000000
##1B8BB0	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7788B2

Deuteranopia (green-blind)

#647BB0

Tritanopia (blue-blind)

#009697

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #1b8bb0;
/* rgb */ color: rgb(27, 139, 176);
/* oklch */ color: oklch(59.5% 0.108 226.6);

Tailwind

colors: {
  custom: {
    50: '#74adc7',
    500: '#1b8bb0',
    950: '#000000',
  },
}

SCSS

$custom: #1b8bb0;
$custom-light: #74adc7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b8bb0",
  "rgb": {
    "r": 27,
    "g": 139,
    "b": 176
  },
  "hsl": {
    "h": 194.899,
    "s": 73.399,
    "l": 39.804
  },
  "oklch": {
    "l": 0.59512,
    "c": 0.10782,
    "h": 226.6
  },
  "luminance": 0.21833
}

Semantic roles & 50–950 ramp

primary

#1B8BB0

secondary

#CB785C

accent

#6638F0

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1B8BB0

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

Preview Lab → · Contrast checker → · Palette generator →