#1B859F#1B859F

#1B859F is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.2% C 0.097 H 219.4°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#1B859F
RGB	rgb(27, 133, 159)
HSL	hsl(192, 71%, 36%)
HSV	hsv(192, 83%, 62%)
CMYK	cmyk(83%, 16.4%, 0%, 37.6%)
CIE-LAB	lab(51.28, -19.22, -22.00)
CIE-LCH	lch(51.28, 29.21, 228.85°)
OKLab	oklab(57.22% -0.0751 -0.0616)
OKLCH	oklch(57.22% 0.097 219.4)
XYZ	xyz(15.0949, 19.5094, 35.7643)
Luminance	0.1951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B859F #9F351B

analogous

#1B9F77 #1B859F #1B439F

triadic

#1B859F #9F1B85 #859F1B

tetradic

#1B859F #771B9F #9F351B #439F1B

square

#1B859F #771B9F #9F351B #439F1B

split-complementary

#1B859F #9F1B43 #9F771B

monochromatic

#092D36 #12596B #1B859F #24B1D3 #53C6E2

Accessibility & contrast

On white

4.28

#1B859F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#1B859F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B859F

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B859F	#FFFFFF	#000000	##000000
##1B859F	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7581A0

Deuteranopia (green-blind)

#64759F

Tritanopia (blue-blind)

#008E8D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #1b859f;
/* rgb */ color: rgb(27, 133, 159);
/* oklch */ color: oklch(57.2% 0.097 219.4);

Tailwind

colors: {
  custom: {
    50: '#70a8bb',
    500: '#1b859f',
    950: '#000000',
  },
}

SCSS

$custom: #1b859f;
$custom-light: #70a8bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b859f",
  "rgb": {
    "r": 27,
    "g": 133,
    "b": 159
  },
  "hsl": {
    "h": 191.818,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.57218,
    "c": 0.0971,
    "h": 219.4
  },
  "luminance": 0.19511
}

Semantic roles & 50–950 ramp

primary

#1B859F

secondary

#C56851

accent

#5D3AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1B859F

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

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