#1B555A#1B555A

#1B555A is a dark, muted teal. Relative luminance 0.075; OKLCH L 41.5% C 0.059 H 203.2°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B555A
RGB	rgb(27, 85, 90)
HSL	hsl(185, 54%, 23%)
HSV	hsv(185, 70%, 35%)
CMYK	cmyk(70%, 5.6%, 0%, 64.7%)
CIE-LAB	lab(32.85, -16.63, -8.42)
CIE-LCH	lch(32.85, 18.64, 206.84°)
OKLab	oklab(41.48% -0.0543 -0.0233)
OKLCH	oklch(41.48% 0.059 203.2)
XYZ	xyz(5.5452, 7.4676, 10.8200)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B555A #5A201B

analogous

#1B5A3F #1B555A #1B355A

triadic

#1B555A #5A1B55 #555A1B

tetradic

#1B555A #3F1B5A #5A201B #355A1B

square

#1B555A #3F1B5A #5A201B #355A1B

split-complementary

#1B555A #5A1B35 #5A3F1B

monochromatic

#071618 #0D292B #1B555A #298189 #37AEB8

Accessibility & contrast

On white

8.42

#1B555A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B555A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B555A

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B555A	#FFFFFF	#000000	##FFFFFF
##1B555A	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E515A

Deuteranopia (green-blind)

#454A5A

Tritanopia (blue-blind)

#005956

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b555a;
/* rgb */ color: rgb(27, 85, 90);
/* oklch */ color: oklch(41.5% 0.059 203.2);

Tailwind

colors: {
  custom: {
    50: '#618588',
    500: '#1b555a',
    950: '#000000',
  },
}

SCSS

$custom: #1b555a;
$custom-light: #618588;
$custom-dark: #000000;

JSON

{
  "hex": "#1b555a",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 90
  },
  "hsl": {
    "h": 184.762,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.41475,
    "c": 0.05911,
    "h": 203.2
  },
  "luminance": 0.07468
}

Semantic roles & 50–950 ramp

primary

#1B555A

secondary

#904741

accent

#564BDD

background

#F6F8F8

surface

#EBEFEF

border

#C6CACA

text

#050B0B

muted

#7A7C7C

Preview Lab

Preview with #1B555A

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

Preview Lab → · Contrast checker → · Palette generator →