#1B879F#1B879F

#1B879F is a mid, moderate cyan. Relative luminance 0.201; OKLCH L 57.7% C 0.097 H 217.4°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B879F
RGB	rgb(27, 135, 159)
HSL	hsl(191, 71%, 36%)
HSV	hsv(191, 83%, 62%)
CMYK	cmyk(83%, 15.1%, 0%, 37.6%)
CIE-LAB	lab(51.91, -20.29, -21.03)
CIE-LCH	lch(51.91, 29.22, 226.02°)
OKLab	oklab(57.73% -0.077 -0.0588)
OKLCH	oklch(57.73% 0.097 217.4)
XYZ	xyz(15.3713, 20.0622, 35.8564)
Luminance	0.2006 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B879F #9F331B

analogous

#1B9F75 #1B879F #1B459F

triadic

#1B879F #9F1B87 #879F1B

tetradic

#1B879F #751B9F #9F331B #459F1B

square

#1B879F #751B9F #9F331B #459F1B

split-complementary

#1B879F #9F1B45 #9F751B

monochromatic

#092E36 #125B6B #1B879F #24B3D3 #53C8E2

Accessibility & contrast

On white

4.19

#1B879F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#1B879F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B879F

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B879F	#FFFFFF	#000000	##000000
##1B879F	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7783A0

Deuteranopia (green-blind)

#66769F

Tritanopia (blue-blind)

#008F8F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #1b879f;
/* rgb */ color: rgb(27, 135, 159);
/* oklch */ color: oklch(57.7% 0.097 217.4);

Tailwind

colors: {
  custom: {
    50: '#71aabb',
    500: '#1b879f',
    950: '#000000',
  },
}

SCSS

$custom: #1b879f;
$custom-light: #71aabb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b879f",
  "rgb": {
    "r": 27,
    "g": 135,
    "b": 159
  },
  "hsl": {
    "h": 190.909,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.57725,
    "c": 0.09691,
    "h": 217.4
  },
  "luminance": 0.20064
}

Semantic roles & 50–950 ramp

primary

#1B879F

secondary

#C56651

accent

#5B3AEE

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #1B879F

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

Preview Lab → · Contrast checker → · Palette generator →