#10403B#10403B

#10403B is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.8% C 0.051 H 185.2°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#10403B
RGB	rgb(16, 64, 59)
HSL	hsl(174, 60%, 16%)
HSV	hsv(174, 75%, 25%)
CMYK	cmyk(75%, 0%, 7.8%, 74.9%)
CIE-LAB	lab(23.97, -17.22, -1.62)
CIE-LCH	lch(23.97, 17.30, 185.37°)
OKLab	oklab(33.83% -0.0509 -0.0046)
OKLCH	oklch(33.83% 0.051 185.2)
XYZ	xyz(2.8361, 4.0924, 4.7773)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10403B #401015

analogous

#104023 #10403B #102D40

triadic

#10403B #3B1040 #403B10

tetradic

#10403B #231040 #401015 #2D4010

square

#10403B #231040 #401015 #2D4010

split-complementary

#10403B #40102D #402310

monochromatic

#061817 #061817 #10403B #1C7168 #28A295

Accessibility & contrast

On white

11.55

#10403B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#10403B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10403B

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10403B	#FFFFFF	#000000	##FFFFFF
##10403B	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3C3B

Deuteranopia (green-blind)

#35373C

Tritanopia (blue-blind)

#00423E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #10403b;
/* rgb */ color: rgb(16, 64, 59);
/* oklch */ color: oklch(33.8% 0.051 185.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#10403b",
  "rgb": {
    "r": 16,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 173.75,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.33829,
    "c": 0.05115,
    "h": 185.2
  },
  "luminance": 0.04093
}

Semantic roles & 50–950 ramp

primary

#10403B

secondary

#7A3239

accent

#4555E3

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#030807

muted

#787B7A

Preview Lab

Preview with #10403B

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

Preview Lab → · Contrast checker → · Palette generator →