#1B839F#1B839F

#1B839F is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 56.7% C 0.097 H 221.4°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B839F
RGB	rgb(27, 131, 159)
HSL	hsl(193, 71%, 36%)
HSV	hsv(193, 83%, 62%)
CMYK	cmyk(83%, 17.6%, 0%, 37.6%)
CIE-LAB	lab(50.65, -18.14, -22.97)
CIE-LCH	lch(50.65, 29.27, 231.70°)
OKLab	oklab(56.71% -0.0731 -0.0644)
OKLCH	oklch(56.71% 0.097 221.4)
XYZ	xyz(14.8237, 18.9669, 35.6739)
Luminance	0.1897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B839F #9F371B

analogous

#1B9F79 #1B839F #1B419F

triadic

#1B839F #9F1B83 #839F1B

tetradic

#1B839F #791B9F #9F371B #419F1B

square

#1B839F #791B9F #9F371B #419F1B

split-complementary

#1B839F #9F1B41 #9F791B

monochromatic

#092D36 #12586B #1B839F #24AED3 #53C3E2

Accessibility & contrast

On white

4.38

#1B839F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#1B839F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B839F

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B839F	#FFFFFF	#000000	##000000
##1B839F	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7280A0

Deuteranopia (green-blind)

#61739F

Tritanopia (blue-blind)

#008C8C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #1b839f;
/* rgb */ color: rgb(27, 131, 159);
/* oklch */ color: oklch(56.7% 0.097 221.4);

Tailwind

colors: {
  custom: {
    50: '#70a7bb',
    500: '#1b839f',
    950: '#000000',
  },
}

SCSS

$custom: #1b839f;
$custom-light: #70a7bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b839f",
  "rgb": {
    "r": 27,
    "g": 131,
    "b": 159
  },
  "hsl": {
    "h": 192.727,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.56712,
    "c": 0.09742,
    "h": 221.4
  },
  "luminance": 0.18969
}

Semantic roles & 50–950 ramp

primary

#1B839F

secondary

#C56A51

accent

#603AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1B839F

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

Preview Lab → · Contrast checker → · Palette generator →