#10404D#10404D

#10404D is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.054 H 219.8°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#10404D
RGB	rgb(16, 64, 77)
HSL	hsl(193, 66%, 18%)
HSV	hsv(193, 79%, 30%)
CMYK	cmyk(79.2%, 16.9%, 0%, 69.8%)
CIE-LAB	lab(24.68, -10.82, -12.48)
CIE-LCH	lch(24.68, 16.51, 229.08°)
OKLab	oklab(34.63% -0.0418 -0.0348)
OKLCH	oklch(34.63% 0.054 219.8)
XYZ	xyz(3.3861, 4.3124, 7.6737)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10404D #4D1D10

analogous

#104D3B #10404D #10214D

triadic

#10404D #4D1040 #404D10

tetradic

#10404D #3B104D #4D1D10 #214D10

square

#10404D #3B104D #4D1D10 #214D10

split-complementary

#10404D #4D1021 #4D3B10

monochromatic

#051519 #05161A #10404D #1B6A80 #2594B2

Accessibility & contrast

On white

11.27

#10404D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#10404D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10404D

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10404D	#FFFFFF	#000000	##FFFFFF
##10404D	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383E4E

Deuteranopia (green-blind)

#30384D

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #10404d;
/* rgb */ color: rgb(16, 64, 77);
/* oklch */ color: oklch(34.6% 0.054 219.8);

Tailwind

colors: {
  custom: {
    50: '#59757e',
    500: '#10404d',
    950: '#000000',
  },
}

SCSS

$custom: #10404d;
$custom-light: #59757e;
$custom-dark: #000000;

JSON

{
  "hex": "#10404d",
  "rgb": {
    "r": 16,
    "g": 64,
    "b": 77
  },
  "hsl": {
    "h": 192.787,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.34631,
    "c": 0.05444,
    "h": 219.8
  },
  "luminance": 0.04313
}

Semantic roles & 50–950 ramp

primary

#10404D

secondary

#874432

accent

#633FE9

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #10404D

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

Preview Lab → · Contrast checker → · Palette generator →