#1B839B#1B839B

#1B839B is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.5% C 0.095 H 218.0°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B839B
RGB	rgb(27, 131, 155)
HSL	hsl(191, 70%, 36%)
HSV	hsv(191, 83%, 61%)
CMYK	cmyk(82.6%, 15.5%, 0%, 39.2%)
CIE-LAB	lab(50.49, -19.53, -20.89)
CIE-LCH	lch(50.49, 28.59, 226.92°)
OKLab	oklab(56.53% -0.0747 -0.0584)
OKLCH	oklch(56.53% 0.095 218)
XYZ	xyz(14.4822, 18.8303, 33.8753)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B839B #9B331B

analogous

#1B9B73 #1B839B #1B439B

triadic

#1B839B #9B1B83 #839B1B

tetradic

#1B839B #731B9B #9B331B #439B1B

square

#1B839B #731B9B #9B331B #439B1B

split-complementary

#1B839B #9B1B43 #9B731B

monochromatic

#092B33 #125767 #1B839B #24AFCF #50C5E0

Accessibility & contrast

On white

4.41

#1B839B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#1B839B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B839B

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B839B	#FFFFFF	#000000	##000000
##1B839B	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747F9C

Deuteranopia (green-blind)

#63739B

Tritanopia (blue-blind)

#008B8B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #1b839b;
/* rgb */ color: rgb(27, 131, 155);
/* oklch */ color: oklch(56.5% 0.095 218.0);

Tailwind

colors: {
  custom: {
    50: '#70a7b8',
    500: '#1b839b',
    950: '#000000',
  },
}

SCSS

$custom: #1b839b;
$custom-light: #70a7b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b839b",
  "rgb": {
    "r": 27,
    "g": 131,
    "b": 155
  },
  "hsl": {
    "h": 191.25,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.5653,
    "c": 0.09487,
    "h": 218
  },
  "luminance": 0.18832
}

Semantic roles & 50–950 ramp

primary

#1B839B

secondary

#C3654F

accent

#5C3BED

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1B839B

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

Preview Lab → · Contrast checker → · Palette generator →