#18256B#18256B

#18256B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.4% C 0.122 H 269.4°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#18256B
RGB	rgb(24, 37, 107)
HSL	hsl(231, 63%, 26%)
HSV	hsv(231, 78%, 42%)
CMYK	cmyk(77.6%, 65.4%, 0%, 58%)
CIE-LAB	lab(18.27, 21.61, -42.36)
CIE-LCH	lch(18.27, 47.55, 297.02°)
OKLab	oklab(30.39% -0.0012 -0.1224)
OKLCH	oklch(30.39% 0.122 269.4)
XYZ	xyz(3.6912, 2.5785, 14.2102)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18256B #6B5E18

analogous

#184E6B #18256B #34186B

triadic

#18256B #6B1825 #256B18

tetradic

#18256B #6B184E #6B5E18 #186B34

square

#18256B #6B184E #6B5E18 #186B34

split-complementary

#18256B #6B3418 #4E6B18

monochromatic

#060919 #0D1439 #18256B #23369D #2E48CF

Accessibility & contrast

On white

13.85

#18256B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#18256B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18256B

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18256B	#FFFFFF	#000000	##FFFFFF
##18256B	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)

#00316D

Deuteranopia (green-blind)

#00296A

Tritanopia (blue-blind)

#003744

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #18256b;
/* rgb */ color: rgb(24, 37, 107);
/* oklch */ color: oklch(30.4% 0.122 269.4);

Tailwind

colors: {
  custom: {
    50: '#635f96',
    500: '#18256b',
    950: '#000000',
  },
}

SCSS

$custom: #18256b;
$custom-light: #635f96;
$custom-dark: #000000;

JSON

{
  "hex": "#18256b",
  "rgb": {
    "r": 24,
    "g": 37,
    "b": 107
  },
  "hsl": {
    "h": 230.602,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.30388,
    "c": 0.1224,
    "h": 269.4
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#18256B

secondary

#A1913E

accent

#CD41E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #18256B

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

Preview Lab → · Contrast checker → · Palette generator →