#103C5A#103C5A

#103C5A is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.071 H 243.0°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#103C5A
RGB	rgb(16, 60, 90)
HSL	hsl(204, 70%, 21%)
HSV	hsv(204, 82%, 35%)
CMYK	cmyk(82.2%, 33.3%, 0%, 64.7%)
CIE-LAB	lab(23.93, -3.06, -22.17)
CIE-LCH	lch(23.93, 22.39, 262.14°)
OKLab	oklab(34.25% -0.032 -0.0628)
OKLCH	oklch(34.25% 0.071 243)
XYZ	xyz(3.6743, 4.0796, 10.2647)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103C5A #5A2E10

analogous

#105A53 #103C5A #10175A

triadic

#103C5A #5A103C #3C5A10

tetradic

#103C5A #53105A #5A2E10 #175A10

square

#103C5A #53105A #5A2E10 #175A10

split-complementary

#103C5A #5A1017 #5A5310

monochromatic

#05111A #071926 #103C5A #195F8E #2281C2

Accessibility & contrast

On white

11.56

#103C5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#103C5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103C5A

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103C5A	#FFFFFF	#000000	##FFFFFF
##103C5A	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5B

Deuteranopia (green-blind)

#243659

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #103c5a;
/* rgb */ color: rgb(16, 60, 90);
/* oklch */ color: oklch(34.3% 0.071 243.0);

Tailwind

colors: {
  custom: {
    50: '#5b7189',
    500: '#103c5a',
    950: '#000000',
  },
}

SCSS

$custom: #103c5a;
$custom-light: #5b7189;
$custom-dark: #000000;

JSON

{
  "hex": "#103c5a",
  "rgb": {
    "r": 16,
    "g": 60,
    "b": 90
  },
  "hsl": {
    "h": 204.324,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.3425,
    "c": 0.07052,
    "h": 243
  },
  "luminance": 0.0408
}

Semantic roles & 50–950 ramp

primary

#103C5A

secondary

#935A33

accent

#833BED

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #103C5A

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

Preview Lab → · Contrast checker → · Palette generator →