#123F40#123F40

#123F40 is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.8% C 0.048 H 197.2°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#123F40
RGB	rgb(18, 63, 64)
HSL	hsl(181, 56%, 16%)
HSV	hsv(181, 72%, 25%)
CMYK	cmyk(71.9%, 1.6%, 0%, 74.9%)
CIE-LAB	lab(23.85, -14.59, -5.12)
CIE-LCH	lch(23.85, 15.46, 199.35°)
OKLab	oklab(33.8% -0.0458 -0.0142)
OKLCH	oklch(33.8% 0.048 197.2)
XYZ	xyz(2.9520, 4.0535, 5.4763)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F40 #401312

analogous

#12402A #123F40 #122840

triadic

#123F40 #40123F #3F4012

tetradic

#123F40 #2A1240 #401312 #284012

square

#123F40 #2A1240 #401312 #284012

split-complementary

#123F40 #401228 #402A12

monochromatic

#071818 #071818 #123F40 #1F6E70 #2D9DA0

Accessibility & contrast

On white

11.60

#123F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F40

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F40	#FFFFFF	#000000	##FFFFFF
##123F40	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C40

Deuteranopia (green-blind)

#333740

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123f40;
/* rgb */ color: rgb(18, 63, 64);
/* oklch */ color: oklch(33.8% 0.048 197.2);

Tailwind

colors: {
  custom: {
    50: '#577474',
    500: '#123f40',
    950: '#000000',
  },
}

SCSS

$custom: #123f40;
$custom-light: #577474;
$custom-dark: #000000;

JSON

{
  "hex": "#123f40",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 181.304,
    "s": 56.098,
    "l": 16.078
  },
  "oklch": {
    "l": 0.33802,
    "c": 0.04799,
    "h": 197.2
  },
  "luminance": 0.04054
}

Semantic roles & 50–950 ramp

primary

#123F40

secondary

#793635

accent

#4C48DF

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #123F40

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

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