#182B5C#182B5C

#182B5C is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.4% C 0.091 H 265.4°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#182B5C
RGB	rgb(24, 43, 92)
HSL	hsl(223, 59%, 23%)
HSV	hsv(223, 74%, 36%)
CMYK	cmyk(73.9%, 53.3%, 0%, 63.9%)
CIE-LAB	lab(18.78, 11.08, -31.69)
CIE-LCH	lch(18.78, 33.57, 289.27°)
OKLab	oklab(30.37% -0.0074 -0.0909)
OKLCH	oklch(30.37% 0.091 265.4)
XYZ	xyz(3.1717, 2.6943, 10.4760)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182B5C #5C4918

analogous

#184D5C #182B5C #27185C

triadic

#182B5C #5C182B #2B5C18

tetradic

#182B5C #5C184D #5C4918 #185C27

square

#182B5C #5C184D #5C4918 #185C27

split-complementary

#182B5C #5C2718 #4D5C18

monochromatic

#060B18 #0B142B #182B5C #25428D #3158BD

Accessibility & contrast

On white

13.65

#182B5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#182B5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182B5C

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182B5C	#FFFFFF	#000000	##FFFFFF
##182B5C	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F315E

Deuteranopia (green-blind)

#002B5B

Tritanopia (blue-blind)

#00373F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #182b5c;
/* rgb */ color: rgb(24, 43, 92);
/* oklch */ color: oklch(30.4% 0.091 265.4);

Tailwind

colors: {
  custom: {
    50: '#5e638a',
    500: '#182b5c',
    950: '#000000',
  },
}

SCSS

$custom: #182b5c;
$custom-light: #5e638a;
$custom-dark: #000000;

JSON

{
  "hex": "#182b5c",
  "rgb": {
    "r": 24,
    "g": 43,
    "b": 92
  },
  "hsl": {
    "h": 223.235,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.3037,
    "c": 0.09122,
    "h": 265.4
  },
  "luminance": 0.02695
}

Semantic roles & 50–950 ramp

primary

#182B5C

secondary

#937B3D

accent

#B646E2

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #182B5C

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

Preview Lab → · Contrast checker → · Palette generator →