#183457#183457

#183457 is a dark, moderate cyan. Relative luminance 0.033; OKLCH L 32.2% C 0.071 H 255.1°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#183457
RGB	rgb(24, 52, 87)
HSL	hsl(213, 57%, 22%)
HSV	hsv(213, 72%, 34%)
CMYK	cmyk(72.4%, 40.2%, 0%, 65.9%)
CIE-LAB	lab(21.35, 2.53, -24.26)
CIE-LCH	lch(21.35, 24.39, 275.95°)
OKLab	oklab(32.25% -0.0183 -0.0689)
OKLCH	oklch(32.25% 0.071 255.1)
XYZ	xyz(3.3244, 3.3380, 9.4841)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183457 #573B18

analogous

#185457 #183457 #1B1857

triadic

#183457 #571834 #345718

tetradic

#183457 #571854 #573B18 #18571B

square

#183457 #571854 #573B18 #18571B

split-complementary

#183457 #571B18 #545718

monochromatic

#070E18 #0B1727 #183457 #255187 #326DB7

Accessibility & contrast

On white

12.59

#183457 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#183457 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183457

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183457	#FFFFFF	#000000	##FFFFFF
##183457	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243658

Deuteranopia (green-blind)

#1B3156

Tritanopia (blue-blind)

#003C41

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183457;
/* rgb */ color: rgb(24, 52, 87);
/* oklch */ color: oklch(32.2% 0.071 255.1);

Tailwind

colors: {
  custom: {
    50: '#5d6b86',
    500: '#183457',
    950: '#000000',
  },
}

SCSS

$custom: #183457;
$custom-light: #5d6b86;
$custom-dark: #000000;

JSON

{
  "hex": "#183457",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 87
  },
  "hsl": {
    "h": 213.333,
    "s": 56.757,
    "l": 21.765
  },
  "oklch": {
    "l": 0.32246,
    "c": 0.07134,
    "h": 255.1
  },
  "luminance": 0.03338
}

Semantic roles & 50–950 ramp

primary

#183457

secondary

#8E6A3D

accent

#9C48E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183457

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

Preview Lab → · Contrast checker → · Palette generator →