#10403A#10403A

#10403A is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.8% C 0.052 H 183.3°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#10403A
RGB	rgb(16, 64, 58)
HSL	hsl(173, 60%, 16%)
HSV	hsv(173, 75%, 25%)
CMYK	cmyk(75%, 0%, 9.4%, 74.9%)
CIE-LAB	lab(23.94, -17.55, -1.00)
CIE-LCH	lch(23.94, 17.58, 183.28°)
OKLab	oklab(33.79% -0.0515 -0.003)
OKLCH	oklch(33.79% 0.052 183.3)
XYZ	xyz(2.8104, 4.0821, 4.6420)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10403A #401016

analogous

#104022 #10403A #102E40

triadic

#10403A #3A1040 #403A10

tetradic

#10403A #221040 #401016 #2E4010

square

#10403A #221040 #401016 #2E4010

split-complementary

#10403A #40102E #402210

monochromatic

#061816 #061816 #10403A #1C7166 #28A293

Accessibility & contrast

On white

11.56

#10403A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#10403A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10403A

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10403A	#FFFFFF	#000000	##FFFFFF
##10403A	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	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: #10403a;
/* rgb */ color: rgb(16, 64, 58);
/* oklch */ color: oklch(33.8% 0.052 183.3);

Tailwind

colors: {
  custom: {
    50: '#567570',
    500: '#10403a',
    950: '#000000',
  },
}

SCSS

$custom: #10403a;
$custom-light: #567570;
$custom-dark: #000000;

JSON

{
  "hex": "#10403a",
  "rgb": {
    "r": 16,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 172.5,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.3379,
    "c": 0.05158,
    "h": 183.3
  },
  "luminance": 0.04082
}

Semantic roles & 50–950 ramp

primary

#10403A

secondary

#7A323B

accent

#4558E3

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#030807

muted

#787B7A

Preview Lab

Preview with #10403A

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

Preview Lab → · Contrast checker → · Palette generator →