#182D58#182D58

#182D58 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.5% C 0.082 H 262.9°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#182D58
RGB	rgb(24, 45, 88)
HSL	hsl(220, 57%, 22%)
HSV	hsv(220, 73%, 35%)
CMYK	cmyk(72.7%, 48.9%, 0%, 65.5%)
CIE-LAB	lab(19.12, 7.96, -28.48)
CIE-LCH	lch(19.12, 29.57, 285.61°)
OKLab	oklab(30.54% -0.0102 -0.0814)
OKLCH	oklch(30.54% 0.082 262.9)
XYZ	xyz(3.0759, 2.7752, 9.6042)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D58 #584318

analogous

#184D58 #182D58 #231858

triadic

#182D58 #58182D #2D5818

tetradic

#182D58 #58184D #584318 #185823

square

#182D58 #58184D #584318 #185823

split-complementary

#182D58 #582318 #4D5818

monochromatic

#070C18 #0B1428 #182D58 #254688 #325EB8

Accessibility & contrast

On white

13.50

#182D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#182D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D58

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D58	#FFFFFF	#000000	##FFFFFF
##182D58	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18325A

Deuteranopia (green-blind)

#0C2C57

Tritanopia (blue-blind)

#00373E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #182d58;
/* rgb */ color: rgb(24, 45, 88);
/* oklch */ color: oklch(30.5% 0.082 262.9);

Tailwind

colors: {
  custom: {
    50: '#5d6587',
    500: '#182d58',
    950: '#000000',
  },
}

SCSS

$custom: #182d58;
$custom-light: #5d6587;
$custom-dark: #000000;

JSON

{
  "hex": "#182d58",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 88
  },
  "hsl": {
    "h": 220.313,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.30541,
    "c": 0.08207,
    "h": 262.9
  },
  "luminance": 0.02776
}

Semantic roles & 50–950 ramp

primary

#182D58

secondary

#8F743D

accent

#AE47E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05050B

muted

#797A7C

Preview Lab

Preview with #182D58

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

Preview Lab → · Contrast checker → · Palette generator →