#183665#183665

#183665 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 33.7% C 0.090 H 259.1°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#183665
RGB	rgb(24, 54, 101)
HSL	hsl(217, 62%, 25%)
HSV	hsv(217, 76%, 40%)
CMYK	cmyk(76.2%, 46.5%, 0%, 60.4%)
CIE-LAB	lab(22.90, 6.87, -30.96)
CIE-LCH	lch(22.90, 31.72, 282.51°)
OKLab	oklab(33.74% -0.017 -0.0886)
OKLCH	oklch(33.74% 0.09 259.1)
XYZ	xyz(4.0440, 3.7717, 12.8243)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183665 #654718

analogous

#185D65 #183665 #201865

triadic

#183665 #651836 #366518

tetradic

#183665 #65185D #654718 #186520

square

#183665 #65185D #654718 #186520

split-complementary

#183665 #652018 #5D6518

monochromatic

#060D19 #0C1C34 #183665 #245096 #306BC8

Accessibility & contrast

On white

11.97

#183665 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#183665 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183665

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183665	#FFFFFF	#000000	##FFFFFF
##183665	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3A67

Deuteranopia (green-blind)

#113364

Tritanopia (blue-blind)

#004148

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183665;
/* rgb */ color: rgb(24, 54, 101);
/* oklch */ color: oklch(33.7% 0.090 259.1);

Tailwind

colors: {
  custom: {
    50: '#606c91',
    500: '#183665',
    950: '#000000',
  },
}

SCSS

$custom: #183665;
$custom-light: #606c91;
$custom-dark: #000000;

JSON

{
  "hex": "#183665",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 101
  },
  "hsl": {
    "h": 216.623,
    "s": 61.6,
    "l": 24.51
  },
  "oklch": {
    "l": 0.33743,
    "c": 0.09021,
    "h": 259.1
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#183665

secondary

#9B773E

accent

#A643E5

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060D

muted

#7A7A7D

Preview Lab

Preview with #183665

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

Preview Lab → · Contrast checker → · Palette generator →