#182D5A#182D5A

#182D5A is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.7% C 0.085 H 263.4°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#182D5A
RGB	rgb(24, 45, 90)
HSL	hsl(221, 58%, 22%)
HSV	hsv(221, 73%, 35%)
CMYK	cmyk(73.3%, 50%, 0%, 64.7%)
CIE-LAB	lab(19.26, 8.79, -29.58)
CIE-LCH	lch(19.26, 30.86, 286.54°)
OKLab	oklab(30.7% -0.0098 -0.0847)
OKLCH	oklch(30.7% 0.085 263.4)
XYZ	xyz(3.1599, 2.8088, 10.0465)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D5A #5A4518

analogous

#184E5A #182D5A #24185A

triadic

#182D5A #5A182D #2D5A18

tetradic

#182D5A #5A184E #5A4518 #185A24

square

#182D5A #5A184E #5A4518 #185A24

split-complementary

#182D5A #5A2418 #4E5A18

monochromatic

#060C18 #0B152A #182D5A #25458A #325DBB

Accessibility & contrast

On white

13.45

#182D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#182D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D5A

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D5A	#FFFFFF	#000000	##FFFFFF
##182D5A	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16325C

Deuteranopia (green-blind)

#092C59

Tritanopia (blue-blind)

#00373F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #182d5a;
/* rgb */ color: rgb(24, 45, 90);
/* oklch */ color: oklch(30.7% 0.085 263.4);

Tailwind

colors: {
  custom: {
    50: '#5e6589',
    500: '#182d5a',
    950: '#000000',
  },
}

SCSS

$custom: #182d5a;
$custom-light: #5e6589;
$custom-dark: #000000;

JSON

{
  "hex": "#182d5a",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 90
  },
  "hsl": {
    "h": 220.909,
    "s": 57.895,
    "l": 22.353
  },
  "oklch": {
    "l": 0.30695,
    "c": 0.08524,
    "h": 263.4
  },
  "luminance": 0.02809
}

Semantic roles & 50–950 ramp

primary

#182D5A

secondary

#91763D

accent

#B047E1

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05050B

muted

#797A7C

Preview Lab

Preview with #182D5A

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

Preview Lab → · Contrast checker → · Palette generator →