#18335B#18335B

#18335B is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.3% C 0.079 H 258.2°. Best body text is #FFFFFF at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#18335B
RGB	rgb(24, 51, 91)
HSL	hsl(216, 58%, 23%)
HSV	hsv(216, 74%, 36%)
CMYK	cmyk(73.6%, 44%, 0%, 64.3%)
CIE-LAB	lab(21.27, 4.87, -27.03)
CIE-LCH	lch(21.27, 27.46, 280.22°)
OKLab	oklab(32.27% -0.0161 -0.0771)
OKLCH	oklch(32.27% 0.079 258.2)
XYZ	xyz(3.4482, 3.3168, 10.3540)
Luminance	0.0332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18335B #5B4018

analogous

#18545B #18335B #1F185B

triadic

#18335B #5B1833 #335B18

tetradic

#18335B #5B1854 #5B4018 #185B1F

square

#18335B #5B1854 #5B4018 #185B1F

split-complementary

#18335B #5B1F18 #545B18

monochromatic

#060E18 #0B182B #18335B #254E8B #3269BC

Accessibility & contrast

On white

12.62

#18335B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#18335B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18335B

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18335B	#FFFFFF	#000000	##FFFFFF
##18335B	1.00	12.62	1.66	12.62
#FFFFFF	12.62	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20365D

Deuteranopia (green-blind)

#16305A

Tritanopia (blue-blind)

#003C42

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #18335b;
/* rgb */ color: rgb(24, 51, 91);
/* oklch */ color: oklch(32.3% 0.079 258.2);

Tailwind

colors: {
  custom: {
    50: '#5e6a89',
    500: '#18335b',
    950: '#000000',
  },
}

SCSS

$custom: #18335b;
$custom-light: #5e6a89;
$custom-dark: #000000;

JSON

{
  "hex": "#18335b",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 91
  },
  "hsl": {
    "h": 215.821,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.32267,
    "c": 0.07875,
    "h": 258.2
  },
  "luminance": 0.03317
}

Semantic roles & 50–950 ramp

primary

#18335B

secondary

#92703D

accent

#A346E1

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #18335B

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

Preview Lab → · Contrast checker → · Palette generator →