#183655#183655

#183655 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.6% C 0.066 H 251.2°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#183655
RGB	rgb(24, 54, 85)
HSL	hsl(210, 56%, 21%)
HSV	hsv(210, 72%, 33%)
CMYK	cmyk(71.8%, 36.5%, 0%, 66.7%)
CIE-LAB	lab(21.90, 0.32, -22.06)
CIE-LCH	lch(21.90, 22.07, 270.83°)
OKLab	oklab(32.64% -0.0213 -0.0625)
OKLCH	oklch(32.64% 0.066 251.2)
XYZ	xyz(3.3349, 3.4881, 9.0901)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183655 #553718

analogous

#185555 #183655 #191855

triadic

#183655 #551836 #365518

tetradic

#183655 #551855 #553718 #185519

square

#183655 #551855 #553718 #185519

split-complementary

#183655 #551918 #555518

monochromatic

#070F18 #0B1825 #183655 #255485 #3373B4

Accessibility & contrast

On white

12.37

#183655 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#183655 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183655

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183655	#FFFFFF	#000000	##FFFFFF
##183655	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283856

Deuteranopia (green-blind)

#203254

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #183655;
/* rgb */ color: rgb(24, 54, 85);
/* oklch */ color: oklch(32.6% 0.066 251.2);

Tailwind

colors: {
  custom: {
    50: '#5d6c85',
    500: '#183655',
    950: '#000000',
  },
}

SCSS

$custom: #183655;
$custom-light: #5d6c85;
$custom-dark: #000000;

JSON

{
  "hex": "#183655",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 85
  },
  "hsl": {
    "h": 210.492,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32639,
    "c": 0.06603,
    "h": 251.2
  },
  "luminance": 0.03488
}

Semantic roles & 50–950 ramp

primary

#183655

secondary

#8C653D

accent

#9549DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #183655

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

Preview Lab → · Contrast checker → · Palette generator →