#103B66#103B66

#103B66 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.088 H 252.0°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#103B66
RGB	rgb(16, 59, 102)
HSL	hsl(210, 73%, 23%)
HSV	hsv(210, 84%, 40%)
CMYK	cmyk(84.3%, 42.2%, 0%, 60%)
CIE-LAB	lab(24.31, 2.66, -29.38)
CIE-LCH	lch(24.31, 29.50, 275.17°)
OKLab	oklab(34.78% -0.0273 -0.0839)
OKLCH	oklch(34.78% 0.088 252)
XYZ	xyz(4.1750, 4.1969, 13.1578)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103B66 #663B10

analogous

#106666 #103B66 #101066

triadic

#103B66 #66103B #3B6610

tetradic

#103B66 #661066 #663B10 #106610

square

#103B66 #661066 #663B10 #106610

split-complementary

#103B66 #661010 #666610

monochromatic

#040F1A #081C31 #103B66 #185A9B #2178D0

Accessibility & contrast

On white

11.42

#103B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#103B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103B66

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103B66	#FFFFFF	#000000	##FFFFFF
##103B66	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263E68

Deuteranopia (green-blind)

#183665

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103b66;
/* rgb */ color: rgb(16, 59, 102);
/* oklch */ color: oklch(34.8% 0.088 252.0);

Tailwind

colors: {
  custom: {
    50: '#5e7092',
    500: '#103b66',
    950: '#000000',
  },
}

SCSS

$custom: #103b66;
$custom-light: #5e7092;
$custom-dark: #000000;

JSON

{
  "hex": "#103b66",
  "rgb": {
    "r": 16,
    "g": 59,
    "b": 102
  },
  "hsl": {
    "h": 210,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34781,
    "c": 0.08825,
    "h": 252
  },
  "luminance": 0.04197
}

Semantic roles & 50–950 ramp

primary

#103B66

secondary

#9E6933

accent

#9438F0

background

#F5F6F9

surface

#EAECF1

border

#C6C7CB

text

#05070D

muted

#797A7E

Preview Lab

Preview with #103B66

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

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