#182D4D#182D4D

#182D4D is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.7% C 0.064 H 258.6°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#182D4D
RGB	rgb(24, 45, 77)
HSL	hsl(216, 52%, 20%)
HSV	hsv(216, 69%, 30%)
CMYK	cmyk(68.8%, 41.6%, 0%, 69.8%)
CIE-LAB	lab(18.39, 3.45, -22.26)
CIE-LCH	lch(18.39, 22.52, 278.80°)
OKLab	oklab(29.74% -0.0128 -0.0632)
OKLCH	oklch(29.74% 0.064 258.6)
XYZ	xyz(2.6542, 2.6065, 7.3830)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D4D #4D3818

analogous

#18484D #182D4D #1D184D

triadic

#182D4D #4D182D #2D4D18

tetradic

#182D4D #4D1848 #4D3818 #184D1D

square

#182D4D #4D1848 #4D3818 #184D1D

split-complementary

#182D4D #4D1D18 #484D18

monochromatic

#070E17 #09121E #182D4D #27487C #3564AA

Accessibility & contrast

On white

13.80

#182D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D4D

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D4D	#FFFFFF	#000000	##FFFFFF
##182D4D	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F304E

Deuteranopia (green-blind)

#182B4C

Tritanopia (blue-blind)

#003439

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182d4d;
/* rgb */ color: rgb(24, 45, 77);
/* oklch */ color: oklch(29.7% 0.064 258.6);

Tailwind

colors: {
  custom: {
    50: '#5b657f',
    500: '#182d4d',
    950: '#000000',
  },
}

SCSS

$custom: #182d4d;
$custom-light: #5b657f;
$custom-dark: #000000;

JSON

{
  "hex": "#182d4d",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 77
  },
  "hsl": {
    "h": 216.226,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.29744,
    "c": 0.06447,
    "h": 258.6
  },
  "luminance": 0.02607
}

Semantic roles & 50–950 ramp

primary

#182D4D

secondary

#84683D

accent

#A34CDC

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #182D4D

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

Preview Lab → · Contrast checker → · Palette generator →