#18255D#18255D

#18255D is a dark, moderate blue. Relative luminance 0.023; OKLCH L 29.1% C 0.101 H 269.2°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#18255D
RGB	rgb(24, 37, 93)
HSL	hsl(229, 59%, 23%)
HSV	hsv(229, 74%, 36%)
CMYK	cmyk(74.2%, 60.2%, 0%, 63.5%)
CIE-LAB	lab(17.02, 15.91, -35.18)
CIE-LCH	lch(17.02, 38.61, 294.33°)
OKLab	oklab(29.07% -0.0013 -0.1013)
OKLCH	oklch(29.07% 0.101 269.2)
XYZ	xyz(3.0134, 2.3073, 10.6404)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18255D #5D5018

analogous

#18475D #18255D #2E185D

triadic

#18255D #5D1825 #255D18

tetradic

#18255D #5D1847 #5D5018 #185D2E

square

#18255D #5D1847 #5D5018 #185D2E

split-complementary

#18255D #5D2E18 #475D18

monochromatic

#060A18 #0B122C #18255D #25388E #314CBE

Accessibility & contrast

On white

14.37

#18255D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#18255D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18255D

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18255D	#FFFFFF	#000000	##FFFFFF
##18255D	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D5F

Deuteranopia (green-blind)

#00275C

Tritanopia (blue-blind)

#00333D

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #18255d;
/* rgb */ color: rgb(24, 37, 93);
/* oklch */ color: oklch(29.1% 0.101 269.2);

Tailwind

colors: {
  custom: {
    50: '#5f5f8b',
    500: '#18255d',
    950: '#000000',
  },
}

SCSS

$custom: #18255d;
$custom-light: #5f5f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#18255d",
  "rgb": {
    "r": 24,
    "g": 37,
    "b": 93
  },
  "hsl": {
    "h": 228.696,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.29072,
    "c": 0.10132,
    "h": 269.2
  },
  "luminance": 0.02308
}

Semantic roles & 50–950 ramp

primary

#18255D

secondary

#93833D

accent

#C546E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05040C

muted

#79797D

Preview Lab

Preview with #18255D

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

Preview Lab → · Contrast checker → · Palette generator →