#12403B#12403B

#12403B is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.9% C 0.050 H 185.0°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#12403B
RGB	rgb(18, 64, 59)
HSL	hsl(173, 56%, 16%)
HSV	hsv(173, 72%, 25%)
CMYK	cmyk(71.9%, 0%, 7.8%, 74.9%)
CIE-LAB	lab(24.03, -16.83, -1.52)
CIE-LCH	lch(24.03, 16.90, 185.17°)
OKLab	oklab(33.89% -0.0498 -0.0044)
OKLCH	oklch(33.89% 0.05 185)
XYZ	xyz(2.8719, 4.1108, 4.7789)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12403B #401217

analogous

#124024 #12403B #122E40

triadic

#12403B #3B1240 #403B12

tetradic

#12403B #241240 #401217 #2E4012

square

#12403B #241240 #401217 #2E4012

split-complementary

#12403B #40122E #402412

monochromatic

#071816 #071816 #12403B #1F7067 #2DA093

Accessibility & contrast

On white

11.52

#12403B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#12403B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12403B

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12403B	#FFFFFF	#000000	##FFFFFF
##12403B	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3C3B

Deuteranopia (green-blind)

#36373C

Tritanopia (blue-blind)

#00423E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #12403b;
/* rgb */ color: rgb(18, 64, 59);
/* oklch */ color: oklch(33.9% 0.050 185.0);

Tailwind

colors: {
  custom: {
    50: '#577570',
    500: '#12403b',
    950: '#000000',
  },
}

SCSS

$custom: #12403b;
$custom-light: #577570;
$custom-dark: #000000;

JSON

{
  "hex": "#12403b",
  "rgb": {
    "r": 18,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 173.478,
    "s": 56.098,
    "l": 16.078
  },
  "oklch": {
    "l": 0.33895,
    "c": 0.04996,
    "h": 185
  },
  "luminance": 0.04111
}

Semantic roles & 50–950 ramp

primary

#12403B

secondary

#79353C

accent

#4859DF

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#030807

muted

#787B7A

Preview Lab

Preview with #12403B

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

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