#103D59#103D59

#103D59 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.068 H 240.7°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#103D59
RGB	rgb(16, 61, 89)
HSL	hsl(203, 70%, 21%)
HSV	hsv(203, 82%, 35%)
CMYK	cmyk(82%, 31.5%, 0%, 65.1%)
CIE-LAB	lab(24.22, -4.14, -21.07)
CIE-LCH	lch(24.22, 21.47, 258.88°)
OKLab	oklab(34.46% -0.0334 -0.0596)
OKLCH	oklch(34.46% 0.068 240.7)
XYZ	xyz(3.6849, 4.1685, 10.0596)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103D59 #592C10

analogous

#105950 #103D59 #101859

triadic

#103D59 #59103D #3D5910

tetradic

#103D59 #501059 #592C10 #185910

square

#103D59 #501059 #592C10 #185910

split-complementary

#103D59 #591018 #595010

monochromatic

#05121A #071925 #103D59 #19618D #2384C1

Accessibility & contrast

On white

11.45

#103D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#103D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103D59

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103D59	#FFFFFF	#000000	##FFFFFF
##103D59	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303D5A

Deuteranopia (green-blind)

#263758

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103d59;
/* rgb */ color: rgb(16, 61, 89);
/* oklch */ color: oklch(34.5% 0.068 240.7);

Tailwind

colors: {
  custom: {
    50: '#5b7288',
    500: '#103d59',
    950: '#000000',
  },
}

SCSS

$custom: #103d59;
$custom-light: #5b7288;
$custom-dark: #000000;

JSON

{
  "hex": "#103d59",
  "rgb": {
    "r": 16,
    "g": 61,
    "b": 89
  },
  "hsl": {
    "h": 203.014,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.3446,
    "c": 0.06835,
    "h": 240.7
  },
  "luminance": 0.04169
}

Semantic roles & 50–950 ramp

primary

#103D59

secondary

#925733

accent

#7F3BEC

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #103D59

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

Preview Lab → · Contrast checker → · Palette generator →