#182B5A#182B5A

#182B5A is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.2% C 0.088 H 265.0°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#182B5A
RGB	rgb(24, 43, 90)
HSL	hsl(223, 58%, 22%)
HSV	hsv(223, 73%, 35%)
CMYK	cmyk(73.3%, 52.2%, 0%, 64.7%)
CIE-LAB	lab(18.63, 10.25, -30.60)
CIE-LCH	lch(18.63, 32.27, 288.52°)
OKLab	oklab(30.21% -0.0076 -0.0877)
OKLCH	oklch(30.21% 0.088 265)
XYZ	xyz(3.0854, 2.6598, 10.0217)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182B5A #5A4718

analogous

#184C5A #182B5A #26185A

triadic

#182B5A #5A182B #2B5A18

tetradic

#182B5A #5A184C #5A4718 #185A26

square

#182B5A #5A184C #5A4718 #185A26

split-complementary

#182B5A #5A2618 #4C5A18

monochromatic

#060C18 #0B142A #182B5A #25428A #3259BB

Accessibility & contrast

On white

13.71

#182B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#182B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182B5A

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182B5A	#FFFFFF	#000000	##FFFFFF
##182B5A	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12315C

Deuteranopia (green-blind)

#032A59

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182b5a;
/* rgb */ color: rgb(24, 43, 90);
/* oklch */ color: oklch(30.2% 0.088 265.0);

Tailwind

colors: {
  custom: {
    50: '#5e6389',
    500: '#182b5a',
    950: '#000000',
  },
}

SCSS

$custom: #182b5a;
$custom-light: #5e6389;
$custom-dark: #000000;

JSON

{
  "hex": "#182b5a",
  "rgb": {
    "r": 24,
    "g": 43,
    "b": 90
  },
  "hsl": {
    "h": 222.727,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.30209,
    "c": 0.08805,
    "h": 265
  },
  "luminance": 0.0266
}

Semantic roles & 50–950 ramp

primary

#182B5A

secondary

#91793D

accent

#B547E1

background

#F5F5F8

surface

#E9EAF0

border

#C5C6CB

text

#05050B

muted

#79797C

Preview Lab

Preview with #182B5A

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

Preview Lab → · Contrast checker → · Palette generator →