#183570#183570

#183570 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.4% C 0.108 H 262.5°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#183570
RGB	rgb(24, 53, 112)
HSL	hsl(220, 65%, 27%)
HSV	hsv(220, 79%, 44%)
CMYK	cmyk(78.6%, 52.7%, 0%, 56.1%)
CIE-LAB	lab(23.37, 12.16, -37.31)
CIE-LCH	lch(23.37, 39.24, 288.05°)
OKLab	oklab(34.35% -0.0141 -0.1073)
OKLCH	oklch(34.35% 0.108 262.5)
XYZ	xyz(4.5734, 3.9097, 15.8397)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183570 #705318

analogous

#186170 #183570 #271870

triadic

#183570 #701835 #357018

tetradic

#183570 #701861 #705318 #187027

square

#183570 #701861 #705318 #187027

split-complementary

#183570 #702718 #617018

monochromatic

#050C19 #0D1D3E #183570 #234DA2 #3065D3

Accessibility & contrast

On white

11.78

#183570 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#183570 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183570

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183570	#FFFFFF	#000000	##FFFFFF
##183570	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113C72

Deuteranopia (green-blind)

#00346F

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183570;
/* rgb */ color: rgb(24, 53, 112);
/* oklch */ color: oklch(34.4% 0.108 262.5);

Tailwind

colors: {
  custom: {
    50: '#636b99',
    500: '#183570',
    950: '#000000',
  },
}

SCSS

$custom: #183570;
$custom-light: #636b99;
$custom-dark: #000000;

JSON

{
  "hex": "#183570",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 112
  },
  "hsl": {
    "h": 220.227,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.34354,
    "c": 0.10819,
    "h": 262.5
  },
  "luminance": 0.0391
}

Semantic roles & 50–950 ramp

primary

#183570

secondary

#A5833E

accent

#B040E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183570

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

Preview Lab → · Contrast checker → · Palette generator →