#103A5D#103A5D

#103A5D is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.9% C 0.077 H 247.8°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#103A5D
RGB	rgb(16, 58, 93)
HSL	hsl(207, 71%, 21%)
HSV	hsv(207, 83%, 36%)
CMYK	cmyk(82.8%, 37.6%, 0%, 63.5%)
CIE-LAB	lab(23.43, -0.45, -24.94)
CIE-LCH	lch(23.43, 24.94, 268.96°)
OKLab	oklab(33.91% -0.0289 -0.0709)
OKLCH	oklch(33.91% 0.077 247.8)
XYZ	xyz(3.7018, 3.9261, 10.9165)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103A5D #5D3310

analogous

#105D5A #103A5D #10145D

triadic

#103A5D #5D103A #3A5D10

tetradic

#103A5D #5A105D #5D3310 #145D10

square

#103A5D #5A105D #5D3310 #145D10

split-complementary

#103A5D #5D1014 #5D5A10

monochromatic

#04101A #071929 #103A5D #195B91 #227BC5

Accessibility & contrast

On white

11.76

#103A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#103A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103A5D

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103A5D	#FFFFFF	#000000	##FFFFFF
##103A5D	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3C5E

Deuteranopia (green-blind)

#1F355C

Tritanopia (blue-blind)

#004247

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #103a5d;
/* rgb */ color: rgb(16, 58, 93);
/* oklch */ color: oklch(33.9% 0.077 247.8);

Tailwind

colors: {
  custom: {
    50: '#5b6f8b',
    500: '#103a5d',
    950: '#000000',
  },
}

SCSS

$custom: #103a5d;
$custom-light: #5b6f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#103a5d",
  "rgb": {
    "r": 16,
    "g": 58,
    "b": 93
  },
  "hsl": {
    "h": 207.273,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.33907,
    "c": 0.0766,
    "h": 247.8
  },
  "luminance": 0.03927
}

Semantic roles & 50–950 ramp

primary

#103A5D

secondary

#966033

accent

#8C3AED

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070C

muted

#797A7D

Preview Lab

Preview with #103A5D

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

Preview Lab → · Contrast checker → · Palette generator →