#183458#183458

#183458 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.073 H 255.7°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#183458
RGB	rgb(24, 52, 88)
HSL	hsl(214, 57%, 22%)
HSV	hsv(214, 73%, 35%)
CMYK	cmyk(72.7%, 40.9%, 0%, 65.5%)
CIE-LAB	lab(21.41, 2.93, -24.82)
CIE-LCH	lch(21.41, 25.00, 276.74°)
OKLab	oklab(32.31% -0.018 -0.0706)
OKLCH	oklch(32.31% 0.073 255.7)
XYZ	xyz(3.3655, 3.3544, 9.7007)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183458 #583C18

analogous

#185458 #183458 #1C1858

triadic

#183458 #581834 #345818

tetradic

#183458 #581854 #583C18 #18581C

square

#183458 #581854 #583C18 #18581C

split-complementary

#183458 #581C18 #545818

monochromatic

#070E18 #0B1828 #183458 #255088 #326DB8

Accessibility & contrast

On white

12.57

#183458 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#183458 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183458

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183458	#FFFFFF	#000000	##FFFFFF
##183458	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243759

Deuteranopia (green-blind)

#1B3157

Tritanopia (blue-blind)

#003C41

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183458;
/* rgb */ color: rgb(24, 52, 88);
/* oklch */ color: oklch(32.3% 0.073 255.7);

Tailwind

colors: {
  custom: {
    50: '#5d6b87',
    500: '#183458',
    950: '#000000',
  },
}

SCSS

$custom: #183458;
$custom-light: #5d6b87;
$custom-dark: #000000;

JSON

{
  "hex": "#183458",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 88
  },
  "hsl": {
    "h": 213.75,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.32314,
    "c": 0.07287,
    "h": 255.7
  },
  "luminance": 0.03355
}

Semantic roles & 50–950 ramp

primary

#183458

secondary

#8F6B3D

accent

#9D47E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183458

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

Preview Lab → · Contrast checker → · Palette generator →