#103C5B#103C5B

#103C5B is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.072 H 243.9°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#103C5B
RGB	rgb(16, 60, 91)
HSL	hsl(205, 70%, 21%)
HSV	hsv(205, 82%, 36%)
CMYK	cmyk(82.4%, 34.1%, 0%, 64.3%)
CIE-LAB	lab(23.99, -2.65, -22.74)
CIE-LCH	lch(23.99, 22.89, 263.36°)
OKLab	oklab(34.31% -0.0317 -0.0645)
OKLCH	oklch(34.31% 0.072 243.9)
XYZ	xyz(3.7171, 4.0968, 10.4903)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103C5B #5B2F10

analogous

#105B54 #103C5B #10165B

triadic

#103C5B #5B103C #3C5B10

tetradic

#103C5B #54105B #5B2F10 #165B10

square

#103C5B #54105B #5B2F10 #165B10

split-complementary

#103C5B #5B1016 #5B5410

monochromatic

#05111A #071A27 #103C5B #195E8F #2281C3

Accessibility & contrast

On white

11.54

#103C5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#103C5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103C5B

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103C5B	#FFFFFF	#000000	##FFFFFF
##103C5B	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5C

Deuteranopia (green-blind)

#23365A

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #103c5b;
/* rgb */ color: rgb(16, 60, 91);
/* oklch */ color: oklch(34.3% 0.072 243.9);

Tailwind

colors: {
  custom: {
    50: '#5b7189',
    500: '#103c5b',
    950: '#000000',
  },
}

SCSS

$custom: #103c5b;
$custom-light: #5b7189;
$custom-dark: #000000;

JSON

{
  "hex": "#103c5b",
  "rgb": {
    "r": 16,
    "g": 60,
    "b": 91
  },
  "hsl": {
    "h": 204.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34313,
    "c": 0.07184,
    "h": 243.9
  },
  "luminance": 0.04097
}

Semantic roles & 50–950 ramp

primary

#103C5B

secondary

#945B33

accent

#843BED

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #103C5B

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

Preview Lab → · Contrast checker → · Palette generator →