#1B859B#1B859B

#1B859B is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.0% C 0.095 H 216.0°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B859B
RGB	rgb(27, 133, 155)
HSL	hsl(190, 70%, 36%)
HSV	hsv(190, 83%, 61%)
CMYK	cmyk(82.6%, 14.2%, 0%, 39.2%)
CIE-LAB	lab(51.12, -20.60, -19.92)
CIE-LCH	lch(51.12, 28.65, 224.03°)
OKLab	oklab(57.04% -0.0767 -0.0557)
OKLCH	oklch(57.04% 0.095 216)
XYZ	xyz(14.7534, 19.3728, 33.9657)
Luminance	0.1938 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B859B #9B311B

analogous

#1B9B71 #1B859B #1B459B

triadic

#1B859B #9B1B85 #859B1B

tetradic

#1B859B #711B9B #9B311B #459B1B

square

#1B859B #711B9B #9B311B #459B1B

split-complementary

#1B859B #9B1B45 #9B711B

monochromatic

#092C33 #125867 #1B859B #24B2CF #50C8E0

Accessibility & contrast

On white

4.31

#1B859B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#1B859B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B859B

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B859B	#FFFFFF	#000000	##000000
##1B859B	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76819C

Deuteranopia (green-blind)

#65759B

Tritanopia (blue-blind)

#008D8C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #1b859b;
/* rgb */ color: rgb(27, 133, 155);
/* oklch */ color: oklch(57.0% 0.095 216.0);

Tailwind

colors: {
  custom: {
    50: '#70a8b8',
    500: '#1b859b',
    950: '#000000',
  },
}

SCSS

$custom: #1b859b;
$custom-light: #70a8b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b859b",
  "rgb": {
    "r": 27,
    "g": 133,
    "b": 155
  },
  "hsl": {
    "h": 190.313,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.57039,
    "c": 0.09478,
    "h": 216
  },
  "luminance": 0.19375
}

Semantic roles & 50–950 ramp

primary

#1B859B

secondary

#C3634F

accent

#593BED

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1B859B

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

Preview Lab → · Contrast checker → · Palette generator →