#18283F#18283F

#18283F is a dark, muted blue. Relative luminance 0.021; OKLCH L 27.5% C 0.048 H 257.5°. Best body text is #FFFFFF at 14.85:1 contrast (WCAG AA passes).

Color values

HEX	#18283F
RGB	rgb(24, 40, 63)
HSL	hsl(215, 45%, 17%)
HSV	hsv(215, 62%, 25%)
CMYK	cmyk(61.9%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(15.85, 1.48, -16.67)
CIE-LCH	lch(15.85, 16.74, 275.08°)
OKLab	oklab(27.49% -0.0104 -0.047)
OKLCH	oklch(27.49% 0.048 257.5)
XYZ	xyz(2.0324, 2.0705, 4.9942)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18283F #3F2F18

analogous

#183C3F #18283F #1C183F

triadic

#18283F #3F1828 #283F18

tetradic

#18283F #3F183C #3F2F18 #183F1C

square

#18283F #3F183C #3F2F18 #183F1C

split-complementary

#18283F #3F1C18 #3C3F18

monochromatic

#080E16 #080E16 #18283F #29446B #3A6098

Accessibility & contrast

On white

14.85

#18283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#18283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18283F

14.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18283F	#FFFFFF	#000000	##FFFFFF
##18283F	1.00	14.85	1.41	14.85
#FFFFFF	14.85	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2A40

Deuteranopia (green-blind)

#1A263F

Tritanopia (blue-blind)

#032D30

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #18283f;
/* rgb */ color: rgb(24, 40, 63);
/* oklch */ color: oklch(27.5% 0.048 257.5);

Tailwind

colors: {
  custom: {
    50: '#586174',
    500: '#18283f',
    950: '#000000',
  },
}

SCSS

$custom: #18283f;
$custom-light: #586174;
$custom-dark: #000000;

JSON

{
  "hex": "#18283f",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 215.385,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.2749,
    "c": 0.04811,
    "h": 257.5
  },
  "luminance": 0.02071
}

Semantic roles & 50–950 ramp

primary

#18283F

secondary

#755E3D

accent

#A053D5

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030508

muted

#78797B

Preview Lab

Preview with #18283F

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

Preview Lab → · Contrast checker → · Palette generator →