#183C40#183C40

#183C40 is a dark, muted teal. Relative luminance 0.038; OKLCH L 33.2% C 0.042 H 205.1°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#183C40
RGB	rgb(24, 60, 64)
HSL	hsl(186, 45%, 17%)
HSV	hsv(186, 63%, 25%)
CMYK	cmyk(62.5%, 6.2%, 0%, 74.9%)
CIE-LAB	lab(22.98, -11.48, -6.39)
CIE-LCH	lch(22.98, 13.14, 209.11°)
OKLab	oklab(33.17% -0.0377 -0.0177)
OKLCH	oklch(33.17% 0.042 205.1)
XYZ	xyz(2.9176, 3.7958, 5.4284)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C40 #401C18

analogous

#184030 #183C40 #182840

triadic

#183C40 #40183C #3C4018

tetradic

#183C40 #301840 #401C18 #284018

square

#183C40 #301840 #401C18 #284018

split-complementary

#183C40 #401828 #403018

monochromatic

#081516 #081516 #183C40 #29666D #398F99

Accessibility & contrast

On white

11.94

#183C40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#183C40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C40

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C40	#FFFFFF	#000000	##FFFFFF
##183C40	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373A40

Deuteranopia (green-blind)

#313540

Tritanopia (blue-blind)

#003E3D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183c40;
/* rgb */ color: rgb(24, 60, 64);
/* oklch */ color: oklch(33.2% 0.042 205.1);

Tailwind

colors: {
  custom: {
    50: '#5a7174',
    500: '#183c40',
    950: '#000000',
  },
}

SCSS

$custom: #183c40;
$custom-light: #5a7174;
$custom-dark: #000000;

JSON

{
  "hex": "#183c40",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 64
  },
  "hsl": {
    "h": 186,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.33168,
    "c": 0.04166,
    "h": 205.1
  },
  "luminance": 0.03796
}

Semantic roles & 50–950 ramp

primary

#183C40

secondary

#77433D

accent

#6053D5

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183C40

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

Preview Lab → · Contrast checker → · Palette generator →