#104C59#104C59

#104C59 is a dark, moderate cyan. Relative luminance 0.060; OKLCH L 38.6% C 0.062 H 216.0°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#104C59
RGB	rgb(16, 76, 89)
HSL	hsl(191, 70%, 21%)
HSV	hsv(191, 82%, 35%)
CMYK	cmyk(82%, 14.6%, 0%, 65.1%)
CIE-LAB	lab(29.41, -13.52, -13.02)
CIE-LCH	lch(29.41, 18.77, 223.92°)
OKLab	oklab(38.61% -0.0501 -0.0363)
OKLCH	oklch(38.61% 0.062 216)
XYZ	xyz(4.6005, 5.9998, 10.3649)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#104C59 #591D10

analogous

#105941 #104C59 #102759

triadic

#104C59 #59104C #4C5910

tetradic

#104C59 #411059 #591D10 #275910

square

#104C59 #411059 #591D10 #275910

split-complementary

#104C59 #591027 #594110

monochromatic

#05161A #072025 #104C59 #19788D #23A5C1

Accessibility & contrast

On white

9.55

#104C59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#104C59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #104C59

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##104C59	#FFFFFF	#000000	##FFFFFF
##104C59	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43495A

Deuteranopia (green-blind)

#394259

Tritanopia (blue-blind)

#005150

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #104c59;
/* rgb */ color: rgb(16, 76, 89);
/* oklch */ color: oklch(38.6% 0.062 216.0);

Tailwind

colors: {
  custom: {
    50: '#5c7e88',
    500: '#104c59',
    950: '#000000',
  },
}

SCSS

$custom: #104c59;
$custom-light: #5c7e88;
$custom-dark: #000000;

JSON

{
  "hex": "#104c59",
  "rgb": {
    "r": 16,
    "g": 76,
    "b": 89
  },
  "hsl": {
    "h": 190.685,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.38609,
    "c": 0.06187,
    "h": 216
  },
  "luminance": 0.06
}

Semantic roles & 50–950 ramp

primary

#104C59

secondary

#924433

accent

#5B3BEC

background

#F5F7F8

surface

#E9EEEF

border

#C5C9CA

text

#050A0B

muted

#797C7C

Preview Lab

Preview with #104C59

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

Preview Lab → · Contrast checker → · Palette generator →