#12403A#12403A

#12403A is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.9% C 0.050 H 183.1°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#12403A
RGB	rgb(18, 64, 58)
HSL	hsl(172, 56%, 16%)
HSV	hsv(172, 72%, 25%)
CMYK	cmyk(71.9%, 0%, 9.4%, 74.9%)
CIE-LAB	lab(24.00, -17.15, -0.91)
CIE-LCH	lch(24.00, 17.18, 183.03°)
OKLab	oklab(33.86% -0.0503 -0.0027)
OKLCH	oklch(33.86% 0.05 183.1)
XYZ	xyz(2.8462, 4.1006, 4.6437)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12403A #401218

analogous

#124023 #12403A #122F40

triadic

#12403A #3A1240 #403A12

tetradic

#12403A #231240 #401218 #2F4012

square

#12403A #231240 #401218 #2F4012

split-complementary

#12403A #40122F #402312

monochromatic

#071816 #071816 #12403A #1F7065 #2DA091

Accessibility & contrast

On white

11.54

#12403A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#12403A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12403A

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12403A	#FFFFFF	#000000	##FFFFFF
##12403A	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3C3A

Deuteranopia (green-blind)

#36373B

Tritanopia (blue-blind)

#00413E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #12403a;
/* rgb */ color: rgb(18, 64, 58);
/* oklch */ color: oklch(33.9% 0.050 183.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#12403a",
  "rgb": {
    "r": 18,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 172.174,
    "s": 56.098,
    "l": 16.078
  },
  "oklch": {
    "l": 0.33856,
    "c": 0.05038,
    "h": 183.1
  },
  "luminance": 0.04101
}

Semantic roles & 50–950 ramp

primary

#12403A

secondary

#79353E

accent

#485CDF

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#030807

muted

#787B7A

Preview Lab

Preview with #12403A

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

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