#104B5B#104B5B

#104B5B is a dark, moderate cyan. Relative luminance 0.059; OKLCH L 38.4% C 0.063 H 220.6°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#104B5B
RGB	rgb(16, 75, 91)
HSL	hsl(193, 70%, 21%)
HSV	hsv(193, 82%, 36%)
CMYK	cmyk(82.4%, 17.6%, 0%, 64.3%)
CIE-LAB	lab(29.15, -12.18, -14.71)
CIE-LCH	lch(29.15, 19.09, 230.37°)
OKLab	oklab(38.43% -0.048 -0.0411)
OKLCH	oklch(38.43% 0.063 220.6)
XYZ	xyz(4.6173, 5.8971, 10.7904)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#104B5B #5B2010

analogous

#105B45 #104B5B #10255B

triadic

#104B5B #5B104B #4B5B10

tetradic

#104B5B #45105B #5B2010 #255B10

square

#104B5B #45105B #5B2010 #255B10

split-complementary

#104B5B #5B1025 #5B4510

monochromatic

#05151A #072027 #104B5B #19768F #22A1C3

Accessibility & contrast

On white

9.63

#104B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#104B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #104B5B

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##104B5B	#FFFFFF	#000000	##FFFFFF
##104B5B	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41495C

Deuteranopia (green-blind)

#37425B

Tritanopia (blue-blind)

#005050

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #104b5b;
/* rgb */ color: rgb(16, 75, 91);
/* oklch */ color: oklch(38.4% 0.063 220.6);

Tailwind

colors: {
  custom: {
    50: '#5c7d89',
    500: '#104b5b',
    950: '#000000',
  },
}

SCSS

$custom: #104b5b;
$custom-light: #5c7d89;
$custom-dark: #000000;

JSON

{
  "hex": "#104b5b",
  "rgb": {
    "r": 16,
    "g": 75,
    "b": 91
  },
  "hsl": {
    "h": 192.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.38428,
    "c": 0.06326,
    "h": 220.6
  },
  "luminance": 0.05898
}

Semantic roles & 50–950 ramp

primary

#104B5B

secondary

#944733

accent

#613BED

background

#F5F7F8

surface

#E9EEF0

border

#C5C9CB

text

#05090B

muted

#797B7C

Preview Lab

Preview with #104B5B

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

Preview Lab → · Contrast checker → · Palette generator →