#182A5A#182A5A

#182A5A is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.0% C 0.089 H 265.8°. Best body text is #FFFFFF at 13.84:1 contrast (WCAG AA passes).

Color values

HEX	#182A5A
RGB	rgb(24, 42, 90)
HSL	hsl(224, 58%, 22%)
HSV	hsv(224, 73%, 35%)
CMYK	cmyk(73.3%, 53.3%, 0%, 64.7%)
CIE-LAB	lab(18.31, 10.98, -31.11)
CIE-LCH	lch(18.31, 32.99, 289.45°)
OKLab	oklab(29.97% -0.0066 -0.0892)
OKLCH	oklch(29.97% 0.089 265.8)
XYZ	xyz(3.0495, 2.5880, 10.0097)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182A5A #5A4818

analogous

#184B5A #182A5A #27185A

triadic

#182A5A #5A182A #2A5A18

tetradic

#182A5A #5A184B #5A4818 #185A27

square

#182A5A #5A184B #5A4818 #185A27

split-complementary

#182A5A #5A2718 #4B5A18

monochromatic

#060B18 #0B132A #182A5A #25418A #3257BB

Accessibility & contrast

On white

13.84

#182A5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182A5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182A5A

13.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182A5A	#FFFFFF	#000000	##FFFFFF
##182A5A	1.00	13.84	1.52	13.84
#FFFFFF	13.84	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F305C

Deuteranopia (green-blind)

#002A59

Tritanopia (blue-blind)

#00353D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182a5a;
/* rgb */ color: rgb(24, 42, 90);
/* oklch */ color: oklch(30.0% 0.089 265.8);

Tailwind

colors: {
  custom: {
    50: '#5e6389',
    500: '#182a5a',
    950: '#000000',
  },
}

SCSS

$custom: #182a5a;
$custom-light: #5e6389;
$custom-dark: #000000;

JSON

{
  "hex": "#182a5a",
  "rgb": {
    "r": 24,
    "g": 42,
    "b": 90
  },
  "hsl": {
    "h": 223.636,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.29969,
    "c": 0.08947,
    "h": 265.8
  },
  "luminance": 0.02588
}

Semantic roles & 50–950 ramp

primary

#182A5A

secondary

#917A3D

accent

#B747E1

background

#F5F5F8

surface

#E9EAF0

border

#C5C6CB

text

#05050B

muted

#79797C

Preview Lab

Preview with #182A5A

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

Preview Lab → · Contrast checker → · Palette generator →