#104E5B#104E5B

#104E5B is a dark, moderate cyan. Relative luminance 0.063; OKLCH L 39.3% C 0.063 H 215.5°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#104E5B
RGB	rgb(16, 78, 91)
HSL	hsl(190, 70%, 21%)
HSV	hsv(190, 82%, 36%)
CMYK	cmyk(82.4%, 14.3%, 0%, 64.3%)
CIE-LAB	lab(30.19, -13.95, -13.11)
CIE-LCH	lch(30.19, 19.15, 223.22°)
OKLab	oklab(39.26% -0.0514 -0.0366)
OKLCH	oklch(39.26% 0.063 215.5)
XYZ	xyz(4.8256, 6.3137, 10.8598)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#104E5B #5B1D10

analogous

#105B42 #104E5B #10285B

triadic

#104E5B #5B104E #4E5B10

tetradic

#104E5B #42105B #5B1D10 #285B10

square

#104E5B #42105B #5B1D10 #285B10

split-complementary

#104E5B #5B1028 #5B4210

monochromatic

#05161A #072127 #104E5B #197B8F #22A7C3

Accessibility & contrast

On white

9.28

#104E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#104E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #104E5B

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##104E5B	#FFFFFF	#000000	##FFFFFF
##104E5B	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454B5C

Deuteranopia (green-blind)

#3B445B

Tritanopia (blue-blind)

#005352

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #104e5b;
/* rgb */ color: rgb(16, 78, 91);
/* oklch */ color: oklch(39.3% 0.063 215.5);

Tailwind

colors: {
  custom: {
    50: '#5d7f89',
    500: '#104e5b',
    950: '#000000',
  },
}

SCSS

$custom: #104e5b;
$custom-light: #5d7f89;
$custom-dark: #000000;

JSON

{
  "hex": "#104e5b",
  "rgb": {
    "r": 16,
    "g": 78,
    "b": 91
  },
  "hsl": {
    "h": 190.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.39264,
    "c": 0.06308,
    "h": 215.5
  },
  "luminance": 0.06314
}

Semantic roles & 50–950 ramp

primary

#104E5B

secondary

#944433

accent

#5A3BED

background

#F5F7F8

surface

#E9EEF0

border

#C5C9CB

text

#050A0B

muted

#797C7C

Preview Lab

Preview with #104E5B

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

Preview Lab → · Contrast checker → · Palette generator →