#103F4B#103F4B

#103F4B is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.2% C 0.053 H 218.5°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#103F4B
RGB	rgb(16, 63, 75)
HSL	hsl(192, 65%, 18%)
HSV	hsv(192, 79%, 29%)
CMYK	cmyk(78.7%, 16%, 0%, 70.6%)
CIE-LAB	lab(24.23, -10.96, -11.84)
CIE-LCH	lch(24.23, 16.13, 227.20°)
OKLab	oklab(34.24% -0.0416 -0.033)
OKLCH	oklch(34.24% 0.053 218.5)
XYZ	xyz(3.2607, 4.1728, 7.2888)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F4B #4B1C10

analogous

#104B39 #103F4B #10224B

triadic

#103F4B #4B103F #3F4B10

tetradic

#103F4B #39104B #4B1C10 #224B10

square

#103F4B #39104B #4B1C10 #224B10

split-complementary

#103F4B #4B1022 #4B3910

monochromatic

#051519 #051519 #103F4B #1B697D #2694B0

Accessibility & contrast

On white

11.45

#103F4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#103F4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F4B

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F4B	#FFFFFF	#000000	##FFFFFF
##103F4B	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4C

Deuteranopia (green-blind)

#2F374B

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103f4b;
/* rgb */ color: rgb(16, 63, 75);
/* oklch */ color: oklch(34.2% 0.053 218.5);

Tailwind

colors: {
  custom: {
    50: '#58747d',
    500: '#103f4b',
    950: '#000000',
  },
}

SCSS

$custom: #103f4b;
$custom-light: #58747d;
$custom-dark: #000000;

JSON

{
  "hex": "#103f4b",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 75
  },
  "hsl": {
    "h": 192.203,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.34245,
    "c": 0.05309,
    "h": 218.5
  },
  "luminance": 0.04173
}

Semantic roles & 50–950 ramp

primary

#103F4B

secondary

#854332

accent

#6240E8

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #103F4B

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

Preview Lab → · Contrast checker → · Palette generator →