#183B41#183B41

#183B41 is a dark, muted teal. Relative luminance 0.037; OKLCH L 32.9% C 0.042 H 210.2°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#183B41
RGB	rgb(24, 59, 65)
HSL	hsl(189, 46%, 17%)
HSV	hsv(189, 63%, 25%)
CMYK	cmyk(63.1%, 9.2%, 0%, 74.5%)
CIE-LAB	lab(22.67, -10.53, -7.54)
CIE-LCH	lch(22.67, 12.95, 215.63°)
OKLab	oklab(32.92% -0.0359 -0.0209)
OKLCH	oklch(32.92% 0.042 210.2)
XYZ	xyz(2.8944, 3.7035, 5.5623)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B41 #411E18

analogous

#184132 #183B41 #182741

triadic

#183B41 #41183B #3B4118

tetradic

#183B41 #321841 #411E18 #274118

square

#183B41 #321841 #411E18 #274118

split-complementary

#183B41 #411827 #413218

monochromatic

#081416 #081416 #183B41 #29646E #398C9A

Accessibility & contrast

On white

12.06

#183B41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#183B41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B41

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B41	#FFFFFF	#000000	##FFFFFF
##183B41	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363941

Deuteranopia (green-blind)

#2F3441

Tritanopia (blue-blind)

#003E3D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183b41;
/* rgb */ color: rgb(24, 59, 65);
/* oklch */ color: oklch(32.9% 0.042 210.2);

Tailwind

colors: {
  custom: {
    50: '#5a7175',
    500: '#183b41',
    950: '#000000',
  },
}

SCSS

$custom: #183b41;
$custom-light: #5a7175;
$custom-dark: #000000;

JSON

{
  "hex": "#183b41",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 65
  },
  "hsl": {
    "h": 188.78,
    "s": 46.067,
    "l": 17.451
  },
  "oklch": {
    "l": 0.32925,
    "c": 0.04152,
    "h": 210.2
  },
  "luminance": 0.03704
}

Semantic roles & 50–950 ramp

primary

#183B41

secondary

#78463D

accent

#6552D6

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183B41

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

Preview Lab → · Contrast checker → · Palette generator →