#1B4F52#1B4F52

#1B4F52 is a dark, muted teal. Relative luminance 0.064; OKLCH L 39.5% C 0.054 H 200.5°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F52
RGB	rgb(27, 79, 82)
HSL	hsl(183, 50%, 21%)
HSV	hsv(183, 67%, 32%)
CMYK	cmyk(67.1%, 3.7%, 0%, 67.8%)
CIE-LAB	lab(30.48, -15.92, -6.89)
CIE-LCH	lch(30.48, 17.34, 203.40°)
OKLab	oklab(39.47% -0.051 -0.0191)
OKLCH	oklch(39.47% 0.054 200.5)
XYZ	xyz(4.7703, 6.4337, 8.9714)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F52 #521E1B

analogous

#1B523A #1B4F52 #1B3452

triadic

#1B4F52 #521B4F #4F521B

tetradic

#1B4F52 #3A1B52 #521E1B #34521B

square

#1B4F52 #3A1B52 #521E1B #34521B

split-complementary

#1B4F52 #521B34 #523A1B

monochromatic

#081617 #0C2324 #1B4F52 #2A7B80 #39A8AE

Accessibility & contrast

On white

9.18

#1B4F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B4F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F52

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F52	#FFFFFF	#000000	##FFFFFF
##1B4F52	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494B52

Deuteranopia (green-blind)

#414552

Tritanopia (blue-blind)

#005250

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4f52;
/* rgb */ color: rgb(27, 79, 82);
/* oklch */ color: oklch(39.5% 0.054 200.5);

Tailwind

colors: {
  custom: {
    50: '#5f8082',
    500: '#1b4f52',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f52;
$custom-light: #5f8082;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f52",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 82
  },
  "hsl": {
    "h": 183.273,
    "s": 50.459,
    "l": 21.373
  },
  "oklch": {
    "l": 0.39466,
    "c": 0.05442,
    "h": 200.5
  },
  "luminance": 0.06434
}

Semantic roles & 50–950 ramp

primary

#1B4F52

secondary

#884541

accent

#554EDA

background

#F5F7F7

surface

#EAEEEE

border

#C6C9C9

text

#050A0A

muted

#797C7C

Preview Lab

Preview with #1B4F52

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

Preview Lab → · Contrast checker → · Palette generator →