#183589#183589

#183589 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.144 H 265.2°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#183589
RGB	rgb(24, 53, 137)
HSL	hsl(225, 70%, 32%)
HSV	hsv(225, 82%, 54%)
CMYK	cmyk(82.5%, 61.3%, 0%, 46.3%)
CIE-LAB	lab(25.40, 22.43, -49.79)
CIE-LCH	lch(25.40, 54.61, 294.25°)
OKLab	oklab(36.52% -0.0121 -0.144)
OKLCH	oklch(36.52% 0.144 265.2)
XYZ	xyz(6.1636, 4.5458, 24.2146)
Luminance	0.0455 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183589 #896C18

analogous

#186E89 #183589 #341889

triadic

#183589 #891835 #358918

tetradic

#183589 #89186E #896C18 #188934

square

#183589 #89186E #896C18 #188934

split-complementary

#183589 #893418 #6E8918

monochromatic

#060D21 #0F2155 #183589 #2149BD #3E67DD

Accessibility & contrast

On white

11.00

#183589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#183589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183589

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183589	#FFFFFF	#000000	##FFFFFF
##183589	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428C

Deuteranopia (green-blind)

#003787

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183589;
/* rgb */ color: rgb(24, 53, 137);
/* oklch */ color: oklch(36.5% 0.144 265.2);

Tailwind

colors: {
  custom: {
    50: '#6a6bac',
    500: '#183589',
    950: '#000000',
  },
}

SCSS

$custom: #183589;
$custom-light: #6a6bac;
$custom-dark: #000000;

JSON

{
  "hex": "#183589",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 137
  },
  "hsl": {
    "h": 224.602,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36524,
    "c": 0.14448,
    "h": 265.2
  },
  "luminance": 0.04547
}

Semantic roles & 50–950 ramp

primary

#183589

secondary

#BD9D40

accent

#BF3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #183589

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

Preview Lab → · Contrast checker → · Palette generator →