#103D4B#103D4B

#103D4B is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.7% C 0.053 H 222.7°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#103D4B
RGB	rgb(16, 61, 75)
HSL	hsl(194, 65%, 18%)
HSV	hsv(194, 79%, 29%)
CMYK	cmyk(78.7%, 18.7%, 0%, 70.6%)
CIE-LAB	lab(23.52, -9.72, -12.93)
CIE-LCH	lch(23.52, 16.18, 233.06°)
OKLab	oklab(33.67% -0.0392 -0.0361)
OKLCH	oklch(33.67% 0.053 222.7)
XYZ	xyz(3.1519, 3.9553, 7.2526)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103D4B #4B1E10

analogous

#104B3B #103D4B #10204B

triadic

#103D4B #4B103D #3D4B10

tetradic

#103D4B #3B104B #4B1E10 #204B10

square

#103D4B #3B104B #4B1E10 #204B10

split-complementary

#103D4B #4B1020 #4B3B10

monochromatic

#051519 #051519 #103D4B #1B667D #268FB0

Accessibility & contrast

On white

11.72

#103D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#103D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103D4B

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103D4B	#FFFFFF	#000000	##FFFFFF
##103D4B	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353B4C

Deuteranopia (green-blind)

#2D354B

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #103d4b;
/* rgb */ color: rgb(16, 61, 75);
/* oklch */ color: oklch(33.7% 0.053 222.7);

Tailwind

colors: {
  custom: {
    50: '#58727d',
    500: '#103d4b',
    950: '#000000',
  },
}

SCSS

$custom: #103d4b;
$custom-light: #58727d;
$custom-dark: #000000;

JSON

{
  "hex": "#103d4b",
  "rgb": {
    "r": 16,
    "g": 61,
    "b": 75
  },
  "hsl": {
    "h": 194.237,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.33674,
    "c": 0.05332,
    "h": 222.7
  },
  "luminance": 0.03956
}

Semantic roles & 50–950 ramp

primary

#103D4B

secondary

#854632

accent

#6840E8

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #103D4B

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

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