#182D53#182D53

#182D53 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.2% C 0.074 H 261.3°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#182D53
RGB	rgb(24, 45, 83)
HSL	hsl(219, 55%, 21%)
HSV	hsv(219, 71%, 33%)
CMYK	cmyk(71.1%, 45.8%, 0%, 67.5%)
CIE-LAB	lab(18.78, 5.89, -25.68)
CIE-LCH	lch(18.78, 26.35, 282.93°)
OKLab	oklab(30.17% -0.0112 -0.0732)
OKLCH	oklch(30.17% 0.074 261.3)
XYZ	xyz(2.8759, 2.6952, 8.5506)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D53 #533E18

analogous

#184A53 #182D53 #201853

triadic

#182D53 #53182D #2D5318

tetradic

#182D53 #53184A #533E18 #185320

square

#182D53 #53184A #533E18 #185320

split-complementary

#182D53 #532018 #4A5318

monochromatic

#070D18 #0A1324 #182D53 #264782 #3360B2

Accessibility & contrast

On white

13.65

#182D53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#182D53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D53

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D53	#FFFFFF	#000000	##FFFFFF
##182D53	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)

#1C3154

Deuteranopia (green-blind)

#122B52

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #182d53;
/* rgb */ color: rgb(24, 45, 83);
/* oklch */ color: oklch(30.2% 0.074 261.3);

Tailwind

colors: {
  custom: {
    50: '#5c6583',
    500: '#182d53',
    950: '#000000',
  },
}

SCSS

$custom: #182d53;
$custom-light: #5c6583;
$custom-dark: #000000;

JSON

{
  "hex": "#182d53",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 83
  },
  "hsl": {
    "h": 218.644,
    "s": 55.14,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30168,
    "c": 0.07409,
    "h": 261.3
  },
  "luminance": 0.02695
}

Semantic roles & 50–950 ramp

primary

#182D53

secondary

#8A6E3D

accent

#A949DE

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050A

muted

#797A7C

Preview Lab

Preview with #182D53

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

Preview Lab → · Contrast checker → · Palette generator →