#103E5B#103E5B

#103E5B is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.070 H 241.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#103E5B
RGB	rgb(16, 62, 91)
HSL	hsl(203, 70%, 21%)
HSV	hsv(203, 82%, 36%)
CMYK	cmyk(82.4%, 31.9%, 0%, 64.3%)
CIE-LAB	lab(24.67, -3.98, -21.67)
CIE-LCH	lch(24.67, 22.03, 259.58°)
OKLab	oklab(34.85% -0.0338 -0.0613)
OKLCH	oklch(34.85% 0.07 241.1)
XYZ	xyz(3.8239, 4.3103, 10.5259)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103E5B #5B2D10

analogous

#105B52 #103E5B #10185B

triadic

#103E5B #5B103E #3E5B10

tetradic

#103E5B #52105B #5B2D10 #185B10

square

#103E5B #52105B #5B2D10 #185B10

split-complementary

#103E5B #5B1018 #5B5210

monochromatic

#05121A #071B27 #103E5B #19618F #2285C3

Accessibility & contrast

On white

11.28

#103E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#103E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103E5B

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103E5B	#FFFFFF	#000000	##FFFFFF
##103E5B	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303E5C

Deuteranopia (green-blind)

#26375A

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #103e5b;
/* rgb */ color: rgb(16, 62, 91);
/* oklch */ color: oklch(34.9% 0.070 241.1);

Tailwind

colors: {
  custom: {
    50: '#5b7389',
    500: '#103e5b',
    950: '#000000',
  },
}

SCSS

$custom: #103e5b;
$custom-light: #5b7389;
$custom-dark: #000000;

JSON

{
  "hex": "#103e5b",
  "rgb": {
    "r": 16,
    "g": 62,
    "b": 91
  },
  "hsl": {
    "h": 203.2,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34853,
    "c": 0.07004,
    "h": 241.1
  },
  "luminance": 0.04311
}

Semantic roles & 50–950 ramp

primary

#103E5B

secondary

#945833

accent

#803BED

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04080B

muted

#797B7C

Preview Lab

Preview with #103E5B

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

Preview Lab → · Contrast checker → · Palette generator →