#1B8BB4#1B8BB4

#1B8BB4 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.7% C 0.111 H 229.2°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B8BB4
RGB	rgb(27, 139, 180)
HSL	hsl(196, 74%, 41%)
HSV	hsv(196, 85%, 71%)
CMYK	cmyk(85%, 22.8%, 0%, 29.4%)
CIE-LAB	lab(54.02, -15.10, -29.86)
CIE-LCH	lch(54.02, 33.46, 243.18°)
OKLab	oklab(59.71% -0.0727 -0.0841)
OKLCH	oklch(59.71% 0.111 229.2)
XYZ	xyz(17.9194, 21.9912, 46.4714)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B8BB4 #B4441B

analogous

#1BB490 #1B8BB4 #1B3FB4

triadic

#1B8BB4 #B41B8B #8BB41B

tetradic

#1B8BB4 #901BB4 #B4441B #3FB41B

square

#1B8BB4 #901BB4 #B4441B #3FB41B

split-complementary

#1B8BB4 #B41B3F #B4901B

monochromatic

#0B394A #13627F #1B8BB4 #2DB0DF #62C4E7

Accessibility & contrast

On white

3.89

#1B8BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#1B8BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B8BB4

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B8BB4	#FFFFFF	#000000	##000000
##1B8BB4	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7689B6

Deuteranopia (green-blind)

#627BB3

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #1b8bb4;
/* rgb */ color: rgb(27, 139, 180);
/* oklch */ color: oklch(59.7% 0.111 229.2);

Tailwind

colors: {
  custom: {
    50: '#74adca',
    500: '#1b8bb4',
    950: '#000000',
  },
}

SCSS

$custom: #1b8bb4;
$custom-light: #74adca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b8bb4",
  "rgb": {
    "r": 27,
    "g": 139,
    "b": 180
  },
  "hsl": {
    "h": 196.078,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.59705,
    "c": 0.11115,
    "h": 229.2
  },
  "luminance": 0.21994
}

Semantic roles & 50–950 ramp

primary

#1B8BB4

secondary

#CC7C5F

accent

#6937F1

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1B8BB4

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

Preview Lab → · Contrast checker → · Palette generator →