#123F42#123F42

#123F42 is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.9% C 0.048 H 201.4°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#123F42
RGB	rgb(18, 63, 66)
HSL	hsl(184, 57%, 16%)
HSV	hsv(184, 73%, 26%)
CMYK	cmyk(72.7%, 4.5%, 0%, 74.1%)
CIE-LAB	lab(23.92, -13.89, -6.34)
CIE-LCH	lch(23.92, 15.27, 204.52°)
OKLab	oklab(33.89% -0.0448 -0.0176)
OKLCH	oklch(33.89% 0.048 201.4)
XYZ	xyz(3.0099, 4.0766, 5.7814)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F42 #421512

analogous

#12422D #123F42 #122742

triadic

#123F42 #42123F #3F4212

tetradic

#123F42 #2D1242 #421512 #274212

square

#123F42 #2D1242 #421512 #274212

split-complementary

#123F42 #421227 #422D12

monochromatic

#071718 #071718 #123F42 #1F6D72 #2C9BA2

Accessibility & contrast

On white

11.57

#123F42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#123F42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F42

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F42	#FFFFFF	#000000	##FFFFFF
##123F42	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C42

Deuteranopia (green-blind)

#333742

Tritanopia (blue-blind)

#004240

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123f42;
/* rgb */ color: rgb(18, 63, 66);
/* oklch */ color: oklch(33.9% 0.048 201.4);

Tailwind

colors: {
  custom: {
    50: '#587476',
    500: '#123f42',
    950: '#000000',
  },
}

SCSS

$custom: #123f42;
$custom-light: #587476;
$custom-dark: #000000;

JSON

{
  "hex": "#123f42",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 66
  },
  "hsl": {
    "h": 183.75,
    "s": 57.143,
    "l": 16.471
  },
  "oklch": {
    "l": 0.33888,
    "c": 0.04812,
    "h": 201.4
  },
  "luminance": 0.04077
}

Semantic roles & 50–950 ramp

primary

#123F42

secondary

#7B3935

accent

#5147E0

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #123F42

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

Preview Lab → · Contrast checker → · Palette generator →