#1B4F55#1B4F55

#1B4F55 is a dark, muted teal. Relative luminance 0.065; OKLCH L 39.6% C 0.055 H 205.8°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F55
RGB	rgb(27, 79, 85)
HSL	hsl(186, 52%, 22%)
HSV	hsv(186, 68%, 33%)
CMYK	cmyk(68.2%, 7.1%, 0%, 66.7%)
CIE-LAB	lab(30.59, -14.91, -8.64)
CIE-LCH	lch(30.59, 17.23, 210.09°)
OKLab	oklab(39.59% -0.0495 -0.0239)
OKLCH	oklch(39.59% 0.055 205.8)
XYZ	xyz(4.8870, 6.4803, 9.5858)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F55 #55211B

analogous

#1B553E #1B4F55 #1B3255

triadic

#1B4F55 #551B4F #4F551B

tetradic

#1B4F55 #3E1B55 #55211B #32551B

square

#1B4F55 #3E1B55 #55211B #32551B

split-complementary

#1B4F55 #551B32 #553E1B

monochromatic

#071617 #0C2427 #1B4F55 #2A7A83 #39A5B2

Accessibility & contrast

On white

9.15

#1B4F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F55

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F55	#FFFFFF	#000000	##FFFFFF
##1B4F55	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484C55

Deuteranopia (green-blind)

#404555

Tritanopia (blue-blind)

#005251

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4f55;
/* rgb */ color: rgb(27, 79, 85);
/* oklch */ color: oklch(39.6% 0.055 205.8);

Tailwind

colors: {
  custom: {
    50: '#608084',
    500: '#1b4f55',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f55;
$custom-light: #608084;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f55",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 85
  },
  "hsl": {
    "h": 186.207,
    "s": 51.786,
    "l": 21.961
  },
  "oklch": {
    "l": 0.39594,
    "c": 0.05499,
    "h": 205.8
  },
  "luminance": 0.06481
}

Semantic roles & 50–950 ramp

primary

#1B4F55

secondary

#8B4941

accent

#5B4DDB

background

#F5F7F8

surface

#EAEEEF

border

#C6C9CA

text

#050A0B

muted

#797C7C

Preview Lab

Preview with #1B4F55

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

Preview Lab → · Contrast checker → · Palette generator →