#1B819F#1B819F

#1B819F is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.2% C 0.098 H 223.3°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B819F
RGB	rgb(27, 129, 159)
HSL	hsl(194, 71%, 36%)
HSV	hsv(194, 83%, 62%)
CMYK	cmyk(83%, 18.9%, 0%, 37.6%)
CIE-LAB	lab(50.02, -17.05, -23.94)
CIE-LCH	lch(50.02, 29.39, 234.54°)
OKLab	oklab(56.21% -0.0712 -0.0672)
OKLCH	oklch(56.21% 0.098 223.3)
XYZ	xyz(14.5576, 18.4349, 35.5852)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B819F #9F391B

analogous

#1B9F7B #1B819F #1B3F9F

triadic

#1B819F #9F1B81 #819F1B

tetradic

#1B819F #7B1B9F #9F391B #3F9F1B

square

#1B819F #7B1B9F #9F391B #3F9F1B

split-complementary

#1B819F #9F1B3F #9F7B1B

monochromatic

#092C36 #12576B #1B819F #24ABD3 #53C1E2

Accessibility & contrast

On white

4.48

#1B819F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#1B819F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B819F

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B819F	#FFFFFF	#000000	##000000
##1B819F	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707EA1

Deuteranopia (green-blind)

#5F729F

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #1b819f;
/* rgb */ color: rgb(27, 129, 159);
/* oklch */ color: oklch(56.2% 0.098 223.3);

Tailwind

colors: {
  custom: {
    50: '#70a5bb',
    500: '#1b819f',
    950: '#000000',
  },
}

SCSS

$custom: #1b819f;
$custom-light: #70a5bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b819f",
  "rgb": {
    "r": 27,
    "g": 129,
    "b": 159
  },
  "hsl": {
    "h": 193.636,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.56207,
    "c": 0.09786,
    "h": 223.3
  },
  "luminance": 0.18437
}

Semantic roles & 50–950 ramp

primary

#1B819F

secondary

#C56B51

accent

#633AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #1B819F

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

Preview Lab → · Contrast checker → · Palette generator →