#10404C#10404C

#10404C is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.054 H 218.1°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#10404C
RGB	rgb(16, 64, 76)
HSL	hsl(192, 65%, 18%)
HSV	hsv(192, 79%, 30%)
CMYK	cmyk(78.9%, 15.8%, 0%, 70.2%)
CIE-LAB	lab(24.63, -11.20, -11.89)
CIE-LCH	lch(24.63, 16.33, 226.71°)
OKLab	oklab(34.58% -0.0423 -0.0332)
OKLCH	oklch(34.58% 0.054 218.1)
XYZ	xyz(3.3510, 4.2984, 7.4891)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10404C #4C1C10

analogous

#104C3A #10404C #10224C

triadic

#10404C #4C1040 #404C10

tetradic

#10404C #3A104C #4C1C10 #224C10

square

#10404C #3A104C #4C1C10 #224C10

split-complementary

#10404C #4C1022 #4C3A10

monochromatic

#051519 #051519 #10404C #1B6B7F #2595B1

Accessibility & contrast

On white

11.29

#10404C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#10404C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10404C

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10404C	#FFFFFF	#000000	##FFFFFF
##10404C	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383E4D

Deuteranopia (green-blind)

#30384C

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #10404c;
/* rgb */ color: rgb(16, 64, 76);
/* oklch */ color: oklch(34.6% 0.054 218.1);

Tailwind

colors: {
  custom: {
    50: '#58757e',
    500: '#10404c',
    950: '#000000',
  },
}

SCSS

$custom: #10404c;
$custom-light: #58757e;
$custom-dark: #000000;

JSON

{
  "hex": "#10404c",
  "rgb": {
    "r": 16,
    "g": 64,
    "b": 76
  },
  "hsl": {
    "h": 192,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.34581,
    "c": 0.05374,
    "h": 218.1
  },
  "luminance": 0.04299
}

Semantic roles & 50–950 ramp

primary

#10404C

secondary

#864332

accent

#6140E8

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #10404C

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

Preview Lab → · Contrast checker → · Palette generator →