#182C5B#182C5B

#182C5B is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.5% C 0.088 H 264.4°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#182C5B
RGB	rgb(24, 44, 91)
HSL	hsl(222, 58%, 23%)
HSV	hsv(222, 74%, 36%)
CMYK	cmyk(73.6%, 51.6%, 0%, 64.3%)
CIE-LAB	lab(19.02, 9.93, -30.64)
CIE-LCH	lch(19.02, 32.21, 287.96°)
OKLab	oklab(30.53% -0.0085 -0.0878)
OKLCH	oklch(30.53% 0.088 264.4)
XYZ	xyz(3.1650, 2.7506, 10.2596)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182C5B #5B4718

analogous

#184D5B #182C5B #26185B

triadic

#182C5B #5B182C #2C5B18

tetradic

#182C5B #5B184D #5B4718 #185B26

square

#182C5B #5B184D #5B4718 #185B26

split-complementary

#182C5B #5B2618 #4D5B18

monochromatic

#060C18 #0B152B #182C5B #25438B #325BBC

Accessibility & contrast

On white

13.55

#182C5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#182C5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182C5B

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182C5B	#FFFFFF	#000000	##FFFFFF
##182C5B	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13315D

Deuteranopia (green-blind)

#042B5A

Tritanopia (blue-blind)

#00373F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #182c5b;
/* rgb */ color: rgb(24, 44, 91);
/* oklch */ color: oklch(30.5% 0.088 264.4);

Tailwind

colors: {
  custom: {
    50: '#5e648a',
    500: '#182c5b',
    950: '#000000',
  },
}

SCSS

$custom: #182c5b;
$custom-light: #5e648a;
$custom-dark: #000000;

JSON

{
  "hex": "#182c5b",
  "rgb": {
    "r": 24,
    "g": 44,
    "b": 91
  },
  "hsl": {
    "h": 222.09,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.3053,
    "c": 0.08823,
    "h": 264.4
  },
  "luminance": 0.02751
}

Semantic roles & 50–950 ramp

primary

#182C5B

secondary

#92783D

accent

#B346E1

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050B

muted

#79797C

Preview Lab

Preview with #182C5B

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

Preview Lab → · Contrast checker → · Palette generator →