#182B4B#182B4B

#182B4B is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.1% C 0.064 H 260.3°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#182B4B
RGB	rgb(24, 43, 75)
HSL	hsl(218, 52%, 19%)
HSV	hsv(218, 68%, 29%)
CMYK	cmyk(68%, 42.7%, 0%, 70.6%)
CIE-LAB	lab(17.60, 4.08, -22.16)
CIE-LCH	lch(17.60, 22.53, 280.43°)
OKLab	oklab(29.09% -0.0108 -0.0629)
OKLCH	oklch(29.09% 0.064 260.3)
XYZ	xyz(2.5101, 2.4297, 6.9919)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182B4B #4B3818

analogous

#18454B #182B4B #1F184B

triadic

#182B4B #4B182B #2B4B18

tetradic

#182B4B #4B1845 #4B3818 #184B1F

square

#182B4B #4B1845 #4B3818 #184B1F

split-complementary

#182B4B #4B1F18 #454B18

monochromatic

#070D17 #09101D #182B4B #274679 #3660A8

Accessibility & contrast

On white

14.13

#182B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#182B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182B4B

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182B4B	#FFFFFF	#000000	##FFFFFF
##182B4B	1.00	14.13	1.49	14.13
#FFFFFF	14.13	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D2E4C

Deuteranopia (green-blind)

#16294A

Tritanopia (blue-blind)

#003237

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #182b4b;
/* rgb */ color: rgb(24, 43, 75);
/* oklch */ color: oklch(29.1% 0.064 260.3);

Tailwind

colors: {
  custom: {
    50: '#5b647d',
    500: '#182b4b',
    950: '#000000',
  },
}

SCSS

$custom: #182b4b;
$custom-light: #5b647d;
$custom-dark: #000000;

JSON

{
  "hex": "#182b4b",
  "rgb": {
    "r": 24,
    "g": 43,
    "b": 75
  },
  "hsl": {
    "h": 217.647,
    "s": 51.515,
    "l": 19.412
  },
  "oklch": {
    "l": 0.29085,
    "c": 0.06386,
    "h": 260.3
  },
  "luminance": 0.0243
}

Semantic roles & 50–950 ramp

primary

#182B4B

secondary

#82683D

accent

#A64DDB

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#040509

muted

#79797B

Preview Lab

Preview with #182B4B

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

Preview Lab → · Contrast checker → · Palette generator →