#104C5A#104C5A

#104C5A is a dark, moderate cyan. Relative luminance 0.060; OKLCH L 38.7% C 0.062 H 217.4°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#104C5A
RGB	rgb(16, 76, 90)
HSL	hsl(191, 70%, 21%)
HSV	hsv(191, 82%, 35%)
CMYK	cmyk(82.2%, 15.6%, 0%, 64.7%)
CIE-LAB	lab(29.45, -13.15, -13.60)
CIE-LCH	lch(29.45, 18.92, 225.96°)
OKLab	oklab(38.66% -0.0496 -0.038)
OKLCH	oklch(38.66% 0.062 217.4)
XYZ	xyz(4.6428, 6.0167, 10.5875)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#104C5A #5A1E10

analogous

#105A43 #104C5A #10275A

triadic

#104C5A #5A104C #4C5A10

tetradic

#104C5A #43105A #5A1E10 #275A10

square

#104C5A #43105A #5A1E10 #275A10

split-complementary

#104C5A #5A1027 #5A4310

monochromatic

#05161A #072026 #104C5A #19788E #22A4C2

Accessibility & contrast

On white

9.53

#104C5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#104C5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #104C5A

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##104C5A	#FFFFFF	#000000	##FFFFFF
##104C5A	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434A5B

Deuteranopia (green-blind)

#39425A

Tritanopia (blue-blind)

#005150

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #104c5a;
/* rgb */ color: rgb(16, 76, 90);
/* oklch */ color: oklch(38.7% 0.062 217.4);

Tailwind

colors: {
  custom: {
    50: '#5c7e88',
    500: '#104c5a',
    950: '#000000',
  },
}

SCSS

$custom: #104c5a;
$custom-light: #5c7e88;
$custom-dark: #000000;

JSON

{
  "hex": "#104c5a",
  "rgb": {
    "r": 16,
    "g": 76,
    "b": 90
  },
  "hsl": {
    "h": 191.351,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.38657,
    "c": 0.06249,
    "h": 217.4
  },
  "luminance": 0.06017
}

Semantic roles & 50–950 ramp

primary

#104C5A

secondary

#934533

accent

#5D3BED

background

#F5F7F8

surface

#E9EEEF

border

#C5C9CA

text

#050A0B

muted

#797C7C

Preview Lab

Preview with #104C5A

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

Preview Lab → · Contrast checker → · Palette generator →