#182D5C#182D5C

#182D5C is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.088 H 263.9°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#182D5C
RGB	rgb(24, 45, 92)
HSL	hsl(221, 59%, 23%)
HSV	hsv(221, 74%, 36%)
CMYK	cmyk(73.9%, 51.1%, 0%, 63.9%)
CIE-LAB	lab(19.41, 9.62, -30.67)
CIE-LCH	lch(19.41, 32.15, 287.41°)
OKLab	oklab(30.85% -0.0094 -0.0879)
OKLCH	oklch(30.85% 0.088 263.9)
XYZ	xyz(3.2462, 2.8433, 10.5009)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D5C #5C4718

analogous

#184F5C #182D5C #25185C

triadic

#182D5C #5C182D #2D5C18

tetradic

#182D5C #5C184F #5C4718 #185C25

square

#182D5C #5C184F #5C4718 #185C25

split-complementary

#182D5C #5C2518 #4F5C18

monochromatic

#060C18 #0B152B #182D5C #25458D #315CBD

Accessibility & contrast

On white

13.39

#182D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#182D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D5C

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D5C	#FFFFFF	#000000	##FFFFFF
##182D5C	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14325E

Deuteranopia (green-blind)

#052C5B

Tritanopia (blue-blind)

#003840

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #182d5c;
/* rgb */ color: rgb(24, 45, 92);
/* oklch */ color: oklch(30.9% 0.088 263.9);

Tailwind

colors: {
  custom: {
    50: '#5e658a',
    500: '#182d5c',
    950: '#000000',
  },
}

SCSS

$custom: #182d5c;
$custom-light: #5e658a;
$custom-dark: #000000;

JSON

{
  "hex": "#182d5c",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 92
  },
  "hsl": {
    "h": 221.471,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.30851,
    "c": 0.08841,
    "h": 263.9
  },
  "luminance": 0.02844
}

Semantic roles & 50–950 ramp

primary

#182D5C

secondary

#93783D

accent

#B246E2

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #182D5C

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

Preview Lab → · Contrast checker → · Palette generator →