#1B859E#1B859E

#1B859E is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.2% C 0.096 H 218.5°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#1B859E
RGB	rgb(27, 133, 158)
HSL	hsl(191, 71%, 36%)
HSV	hsv(191, 83%, 62%)
CMYK	cmyk(82.9%, 15.8%, 0%, 38%)
CIE-LAB	lab(51.24, -19.57, -21.48)
CIE-LCH	lch(51.24, 29.06, 227.66°)
OKLab	oklab(57.17% -0.0755 -0.0601)
OKLCH	oklch(57.17% 0.096 218.5)
XYZ	xyz(15.0084, 19.4748, 35.3091)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B859E #9E341B

analogous

#1B9E76 #1B859E #1B449E

triadic

#1B859E #9E1B85 #859E1B

tetradic

#1B859E #761B9E #9E341B #449E1B

square

#1B859E #761B9E #9E341B #449E1B

split-complementary

#1B859E #9E1B44 #9E761B

monochromatic

#092D35 #12596A #1B859E #24B1D2 #52C6E1

Accessibility & contrast

On white

4.29

#1B859E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#1B859E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B859E

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B859E	#FFFFFF	#000000	##000000
##1B859E	1.00	4.29	4.90	4.90
#FFFFFF	4.29	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)

#75819F

Deuteranopia (green-blind)

#64759E

Tritanopia (blue-blind)

#008D8D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #1b859e;
/* rgb */ color: rgb(27, 133, 158);
/* oklch */ color: oklch(57.2% 0.096 218.5);

Tailwind

colors: {
  custom: {
    50: '#70a8ba',
    500: '#1b859e',
    950: '#000000',
  },
}

SCSS

$custom: #1b859e;
$custom-light: #70a8ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b859e",
  "rgb": {
    "r": 27,
    "g": 133,
    "b": 158
  },
  "hsl": {
    "h": 191.45,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.57173,
    "c": 0.09649,
    "h": 218.5
  },
  "luminance": 0.19477
}

Semantic roles & 50–950 ramp

primary

#1B859E

secondary

#C46751

accent

#5C3AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #1B859E

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

Preview Lab → · Contrast checker → · Palette generator →