#183755#183755

#183755 is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 32.9% C 0.065 H 249.8°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#183755
RGB	rgb(24, 55, 85)
HSL	hsl(210, 56%, 21%)
HSV	hsv(210, 72%, 33%)
CMYK	cmyk(71.8%, 35.3%, 0%, 66.7%)
CIE-LAB	lab(22.24, -0.37, -21.53)
CIE-LCH	lch(22.24, 21.54, 269.02°)
OKLab	oklab(32.9% -0.0225 -0.0609)
OKLCH	oklch(32.9% 0.065 249.8)
XYZ	xyz(3.3820, 3.5821, 9.1058)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183755 #553618

analogous

#185555 #183755 #181955

triadic

#183755 #551837 #375518

tetradic

#183755 #551855 #553618 #195518

square

#183755 #551855 #553618 #195518

split-complementary

#183755 #551819 #555518

monochromatic

#070F18 #0B1825 #183755 #255685 #3375B4

Accessibility & contrast

On white

12.23

#183755 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#183755 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183755

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183755	#FFFFFF	#000000	##FFFFFF
##183755	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3856

Deuteranopia (green-blind)

#213354

Tritanopia (blue-blind)

#003E42

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183755;
/* rgb */ color: rgb(24, 55, 85);
/* oklch */ color: oklch(32.9% 0.065 249.8);

Tailwind

colors: {
  custom: {
    50: '#5d6d85',
    500: '#183755',
    950: '#000000',
  },
}

SCSS

$custom: #183755;
$custom-light: #5d6d85;
$custom-dark: #000000;

JSON

{
  "hex": "#183755",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 85
  },
  "hsl": {
    "h": 209.508,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32904,
    "c": 0.06495,
    "h": 249.8
  },
  "luminance": 0.03582
}

Semantic roles & 50–950 ramp

primary

#183755

secondary

#8C643D

accent

#9349DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #183755

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

Preview Lab → · Contrast checker → · Palette generator →