#182A5B#182A5B

#182A5B is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.1% C 0.091 H 265.9°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#182A5B
RGB	rgb(24, 42, 91)
HSL	hsl(224, 58%, 23%)
HSV	hsv(224, 74%, 36%)
CMYK	cmyk(73.6%, 53.8%, 0%, 64.3%)
CIE-LAB	lab(18.39, 11.40, -31.65)
CIE-LCH	lch(18.39, 33.64, 289.80°)
OKLab	oklab(30.05% -0.0065 -0.0908)
OKLCH	oklch(30.05% 0.091 265.9)
XYZ	xyz(3.0923, 2.6051, 10.2354)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182A5B #5B4918

analogous

#184B5B #182A5B #28185B

triadic

#182A5B #5B182A #2A5B18

tetradic

#182A5B #5B184B #5B4918 #185B28

square

#182A5B #5B184B #5B4918 #185B28

split-complementary

#182A5B #5B2818 #4B5B18

monochromatic

#060B18 #0B142B #182A5B #25408B #3257BC

Accessibility & contrast

On white

13.81

#182A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182A5B

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182A5B	#FFFFFF	#000000	##FFFFFF
##182A5B	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E305D

Deuteranopia (green-blind)

#002A5A

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182a5b;
/* rgb */ color: rgb(24, 42, 91);
/* oklch */ color: oklch(30.1% 0.091 265.9);

Tailwind

colors: {
  custom: {
    50: '#5e638a',
    500: '#182a5b',
    950: '#000000',
  },
}

SCSS

$custom: #182a5b;
$custom-light: #5e638a;
$custom-dark: #000000;

JSON

{
  "hex": "#182a5b",
  "rgb": {
    "r": 24,
    "g": 42,
    "b": 91
  },
  "hsl": {
    "h": 223.881,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.30051,
    "c": 0.09105,
    "h": 265.9
  },
  "luminance": 0.02605
}

Semantic roles & 50–950 ramp

primary

#182A5B

secondary

#927B3D

accent

#B846E1

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #182A5B

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

Preview Lab → · Contrast checker → · Palette generator →