#182D4B#182D4B

#182D4B is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.6% C 0.061 H 257.4°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#182D4B
RGB	rgb(24, 45, 75)
HSL	hsl(215, 52%, 19%)
HSV	hsv(215, 68%, 29%)
CMYK	cmyk(68%, 40%, 0%, 70.6%)
CIE-LAB	lab(18.27, 2.64, -21.10)
CIE-LCH	lch(18.27, 21.26, 277.13°)
OKLab	oklab(29.61% -0.0133 -0.0598)
OKLCH	oklch(29.61% 0.061 257.4)
XYZ	xyz(2.5846, 2.5787, 7.0168)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182D4B #4B3618

analogous

#18474B #182D4B #1D184B

triadic

#182D4B #4B182D #2D4B18

tetradic

#182D4B #4B1847 #4B3618 #184B1D

square

#182D4B #4B1847 #4B3618 #184B1D

split-complementary

#182D4B #4B1D18 #474B18

monochromatic

#070E17 #09111D #182D4B #274979 #3665A8

Accessibility & contrast

On white

13.85

#182D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#182D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182D4B

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182D4B	#FFFFFF	#000000	##FFFFFF
##182D4B	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#202F4C

Deuteranopia (green-blind)

#192A4A

Tritanopia (blue-blind)

#003438

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #182d4b;
/* rgb */ color: rgb(24, 45, 75);
/* oklch */ color: oklch(29.6% 0.061 257.4);

Tailwind

colors: {
  custom: {
    50: '#5a657d',
    500: '#182d4b',
    950: '#000000',
  },
}

SCSS

$custom: #182d4b;
$custom-light: #5a657d;
$custom-dark: #000000;

JSON

{
  "hex": "#182d4b",
  "rgb": {
    "r": 24,
    "g": 45,
    "b": 75
  },
  "hsl": {
    "h": 215.294,
    "s": 51.515,
    "l": 19.412
  },
  "oklch": {
    "l": 0.29608,
    "c": 0.06127,
    "h": 257.4
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#182D4B

secondary

#82653D

accent

#A04DDB

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040509

muted

#797A7B

Preview Lab

Preview with #182D4B

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

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