#183D6F#183D6F

#183D6F is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.096 H 256.9°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#183D6F
RGB	rgb(24, 61, 111)
HSL	hsl(214, 64%, 26%)
HSV	hsv(214, 78%, 44%)
CMYK	cmyk(78.4%, 45%, 0%, 56.5%)
CIE-LAB	lab(25.80, 6.09, -32.76)
CIE-LCH	lch(25.80, 33.33, 280.53°)
OKLab	oklab(36.2% -0.0218 -0.0937)
OKLCH	oklch(36.2% 0.096 256.9)
XYZ	xyz(4.9136, 4.6788, 15.6800)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D6F #6F4A18

analogous

#18696F #183D6F #1F186F

triadic

#183D6F #6F183D #3D6F18

tetradic

#183D6F #6F1869 #6F4A18 #186F1F

square

#183D6F #6F1869 #6F4A18 #186F1F

split-complementary

#183D6F #6F1F18 #696F18

monochromatic

#050E19 #0D213D #183D6F #2359A1 #2F75D2

Accessibility & contrast

On white

10.85

#183D6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183D6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D6F

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D6F	#FFFFFF	#000000	##FFFFFF
##183D6F	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244171

Deuteranopia (green-blind)

#15396E

Tritanopia (blue-blind)

#004950

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183d6f;
/* rgb */ color: rgb(24, 61, 111);
/* oklch */ color: oklch(36.2% 0.096 256.9);

Tailwind

colors: {
  custom: {
    50: '#627299',
    500: '#183d6f',
    950: '#000000',
  },
}

SCSS

$custom: #183d6f;
$custom-light: #627299;
$custom-dark: #000000;

JSON

{
  "hex": "#183d6f",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 111
  },
  "hsl": {
    "h": 214.483,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.362,
    "c": 0.09624,
    "h": 256.9
  },
  "luminance": 0.04679
}

Semantic roles & 50–950 ramp

primary

#183D6F

secondary

#A5793E

accent

#A040E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183D6F

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

Preview Lab → · Contrast checker → · Palette generator →