#1B729F#1B729F

#1B729F is a mid, moderate cyan. Relative luminance 0.148; OKLCH L 52.4% C 0.105 H 237.3°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B729F
RGB	rgb(27, 114, 159)
HSL	hsl(200, 71%, 36%)
HSV	hsv(200, 83%, 62%)
CMYK	cmyk(83%, 28.3%, 0%, 37.6%)
CIE-LAB	lab(45.32, -8.51, -31.25)
CIE-LCH	lch(45.32, 32.39, 254.77°)
OKLab	oklab(52.45% -0.0568 -0.0884)
OKLCH	oklch(52.45% 0.105 237.3)
XYZ	xyz(12.7248, 14.7693, 34.9743)
Luminance	0.1477 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B729F #9F481B

analogous

#1B9F8A #1B729F #1B309F

triadic

#1B729F #9F1B72 #729F1B

tetradic

#1B729F #8A1B9F #9F481B #309F1B

square

#1B729F #8A1B9F #9F481B #309F1B

split-complementary

#1B729F #9F1B30 #9F8A1B

monochromatic

#092736 #124C6B #1B729F #2498D3 #53B1E2

Accessibility & contrast

On white

5.31

#1B729F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#1B729F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B729F

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B729F	#FFFFFF	#000000	##FFFFFF
##1B729F	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C72A1

Deuteranopia (green-blind)

#4B669E

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #1b729f;
/* rgb */ color: rgb(27, 114, 159);
/* oklch */ color: oklch(52.4% 0.105 237.3);

Tailwind

colors: {
  custom: {
    50: '#6f9abb',
    500: '#1b729f',
    950: '#000000',
  },
}

SCSS

$custom: #1b729f;
$custom-light: #6f9abb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b729f",
  "rgb": {
    "r": 27,
    "g": 114,
    "b": 159
  },
  "hsl": {
    "h": 200.455,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.52448,
    "c": 0.10509,
    "h": 237.3
  },
  "luminance": 0.14771
}

Semantic roles & 50–950 ramp

primary

#1B729F

secondary

#C57951

accent

#773AEE

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #1B729F

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

Preview Lab → · Contrast checker → · Palette generator →