#182D4E#182D4E

#182D4E is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.8% C 0.066 H 259.1°. Best body text is #FFFFFF at 13.78:1 contrast (WCAG AA passes).

Color values

HEX	#182D4E
RGB	rgb(24, 45, 78)
HSL	hsl(217, 53%, 20%)
HSV	hsv(217, 69%, 31%)
CMYK	cmyk(69.2%, 42.3%, 0%, 69.4%)
CIE-LAB	lab(18.46, 3.85, -22.83)
CIE-LCH	lch(18.46, 23.15, 279.57°)
OKLab	oklab(29.81% -0.0125 -0.0649)
OKLCH	oklch(29.81% 0.066 259.1)
XYZ	xyz(2.6897, 2.6208, 7.5704)
Luminance	0.0262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D4E #4E3918

analogous

#18484E #182D4E #1E184E

triadic

#182D4E #4E182D #2D4E18

tetradic

#182D4E #4E1848 #4E3918 #184E1E

square

#182D4E #4E1848 #4E3918 #184E1E

split-complementary

#182D4E #4E1E18 #484E18

monochromatic

#070D17 #0A121F #182D4E #26487D #3563AC

Accessibility & contrast

On white

13.78

#182D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D4E

13.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D4E	#FFFFFF	#000000	##FFFFFF
##182D4E	1.00	13.78	1.52	13.78
#FFFFFF	13.78	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F304F

Deuteranopia (green-blind)

#172B4D

Tritanopia (blue-blind)

#003439

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182d4e;
/* rgb */ color: rgb(24, 45, 78);
/* oklch */ color: oklch(29.8% 0.066 259.1);

Tailwind

colors: {
  custom: {
    50: '#5b6580',
    500: '#182d4e',
    950: '#000000',
  },
}

SCSS

$custom: #182d4e;
$custom-light: #5b6580;
$custom-dark: #000000;

JSON

{
  "hex": "#182d4e",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 78
  },
  "hsl": {
    "h": 216.667,
    "s": 52.941,
    "l": 20
  },
  "oklch": {
    "l": 0.29813,
    "c": 0.06606,
    "h": 259.1
  },
  "luminance": 0.02621
}

Semantic roles & 50–950 ramp

primary

#182D4E

secondary

#85693D

accent

#A44BDC

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #182D4E

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

Preview Lab → · Contrast checker → · Palette generator →