#182B5B#182B5B

#182B5B is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.3% C 0.090 H 265.2°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#182B5B
RGB	rgb(24, 43, 91)
HSL	hsl(223, 58%, 23%)
HSV	hsv(223, 74%, 36%)
CMYK	cmyk(73.6%, 52.7%, 0%, 64.3%)
CIE-LAB	lab(18.70, 10.66, -31.14)
CIE-LCH	lch(18.70, 32.92, 288.90°)
OKLab	oklab(30.29% -0.0075 -0.0893)
OKLCH	oklch(30.29% 0.09 265.2)
XYZ	xyz(3.1282, 2.6770, 10.2473)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182B5B #5B4818

analogous

#184D5B #182B5B #26185B

triadic

#182B5B #5B182B #2B5B18

tetradic

#182B5B #5B184D #5B4818 #185B26

square

#182B5B #5B184D #5B4818 #185B26

split-complementary

#182B5B #5B2618 #4D5B18

monochromatic

#060B18 #0B142B #182B5B #25428B #3259BC

Accessibility & contrast

On white

13.68

#182B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#182B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182B5B

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182B5B	#FFFFFF	#000000	##FFFFFF
##182B5B	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10315D

Deuteranopia (green-blind)

#012B5A

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182b5b;
/* rgb */ color: rgb(24, 43, 91);
/* oklch */ color: oklch(30.3% 0.090 265.2);

Tailwind

colors: {
  custom: {
    50: '#5e638a',
    500: '#182b5b',
    950: '#000000',
  },
}

SCSS

$custom: #182b5b;
$custom-light: #5e638a;
$custom-dark: #000000;

JSON

{
  "hex": "#182b5b",
  "rgb": {
    "r": 24,
    "g": 43,
    "b": 91
  },
  "hsl": {
    "h": 222.985,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.30289,
    "c": 0.08963,
    "h": 265.2
  },
  "luminance": 0.02677
}

Semantic roles & 50–950 ramp

primary

#182B5B

secondary

#927A3D

accent

#B546E1

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050B

muted

#79797C

Preview Lab

Preview with #182B5B

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

Preview Lab → · Contrast checker → · Palette generator →