#182C58#182C58

#182C58 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.3% C 0.083 H 263.8°. Best body text is #FFFFFF at 13.64:1 contrast (WCAG AA passes).

Color values

HEX	#182C58
RGB	rgb(24, 44, 88)
HSL	hsl(221, 57%, 22%)
HSV	hsv(221, 73%, 35%)
CMYK	cmyk(72.7%, 50%, 0%, 65.5%)
CIE-LAB	lab(18.80, 8.69, -28.99)
CIE-LCH	lch(18.80, 30.26, 286.68°)
OKLab	oklab(30.29% -0.0091 -0.083)
OKLCH	oklch(30.29% 0.083 263.8)
XYZ	xyz(3.0382, 2.6998, 9.5916)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182C58 #584418

analogous

#184C58 #182C58 #241858

triadic

#182C58 #58182C #2C5818

tetradic

#182C58 #58184C #584418 #185824

square

#182C58 #58184C #584418 #185824

split-complementary

#182C58 #582418 #4C5818

monochromatic

#070C18 #0B1428 #182C58 #254488 #325CB8

Accessibility & contrast

On white

13.64

#182C58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#182C58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182C58

13.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182C58	#FFFFFF	#000000	##FFFFFF
##182C58	1.00	13.64	1.54	13.64
#FFFFFF	13.64	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16315A

Deuteranopia (green-blind)

#092B57

Tritanopia (blue-blind)

#00363D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #182c58;
/* rgb */ color: rgb(24, 44, 88);
/* oklch */ color: oklch(30.3% 0.083 263.8);

Tailwind

colors: {
  custom: {
    50: '#5d6487',
    500: '#182c58',
    950: '#000000',
  },
}

SCSS

$custom: #182c58;
$custom-light: #5d6487;
$custom-dark: #000000;

JSON

{
  "hex": "#182c58",
  "rgb": {
    "r": 24,
    "g": 44,
    "b": 88
  },
  "hsl": {
    "h": 221.25,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.30294,
    "c": 0.08346,
    "h": 263.8
  },
  "luminance": 0.027
}

Semantic roles & 50–950 ramp

primary

#182C58

secondary

#8F753D

accent

#B147E0

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#05050B

muted

#79797C

Preview Lab

Preview with #182C58

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

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