#1B4E51#1B4E51

#1B4E51 is a dark, muted teal. Relative luminance 0.063; OKLCH L 39.1% C 0.054 H 200.6°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E51
RGB	rgb(27, 78, 81)
HSL	hsl(183, 50%, 21%)
HSV	hsv(183, 67%, 32%)
CMYK	cmyk(66.7%, 3.7%, 0%, 68.2%)
CIE-LAB	lab(30.10, -15.68, -6.83)
CIE-LCH	lch(30.10, 17.10, 203.52°)
OKLab	oklab(39.14% -0.0502 -0.0189)
OKLCH	oklch(39.14% 0.054 200.6)
XYZ	xyz(4.6610, 6.2754, 8.7486)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E51 #511E1B

analogous

#1B5139 #1B4E51 #1B3351

triadic

#1B4E51 #511B4E #4E511B

tetradic

#1B4E51 #391B51 #511E1B #33511B

square

#1B4E51 #391B51 #511E1B #33511B

split-complementary

#1B4E51 #511B33 #51391B

monochromatic

#081617 #0C2223 #1B4E51 #2A7A7F #3AA6AD

Accessibility & contrast

On white

9.31

#1B4E51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B4E51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E51

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E51	#FFFFFF	#000000	##FFFFFF
##1B4E51	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484A51

Deuteranopia (green-blind)

#404451

Tritanopia (blue-blind)

#00514F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4e51;
/* rgb */ color: rgb(27, 78, 81);
/* oklch */ color: oklch(39.1% 0.054 200.6);

Tailwind

colors: {
  custom: {
    50: '#5f7f81',
    500: '#1b4e51',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e51;
$custom-light: #5f7f81;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e51",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 81
  },
  "hsl": {
    "h": 183.333,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.39144,
    "c": 0.05367,
    "h": 200.6
  },
  "luminance": 0.06276
}

Semantic roles & 50–950 ramp

primary

#1B4E51

secondary

#874541

accent

#564EDA

background

#F5F7F7

surface

#EAEEEE

border

#C6C9C9

text

#050A0A

muted

#797C7C

Preview Lab

Preview with #1B4E51

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

Preview Lab → · Contrast checker → · Palette generator →