#20178B#20178B

#20178B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.178 H 273.4°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#20178B
RGB	rgb(32, 23, 139)
HSL	hsl(245, 72%, 32%)
HSV	hsv(245, 83%, 55%)
CMYK	cmyk(77%, 83.5%, 0%, 45.5%)
CIE-LAB	lab(19.15, 42.57, -61.31)
CIE-LCH	lch(19.15, 74.64, 304.78°)
OKLab	oklab(32.19% 0.0105 -0.1773)
OKLCH	oklch(32.19% 0.178 273.4)
XYZ	xyz(5.5607, 2.7834, 24.6653)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#20178B #828B17

analogous

#17488B #20178B #5A178B

triadic

#20178B #8B2017 #178B20

tetradic

#20178B #8B1748 #828B17 #178B5A

square

#20178B #8B1748 #828B17 #178B5A

split-complementary

#20178B #8B5A17 #488B17

monochromatic

#080622 #140E56 #20178B #2C20C0 #4A3DDF

Accessibility & contrast

On white

13.49

#20178B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#20178B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #20178B

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##20178B	#FFFFFF	#000000	##FFFFFF
##20178B	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002989

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #20178b;
/* rgb */ color: rgb(32, 23, 139);
/* oklch */ color: oklch(32.2% 0.178 273.4);

Tailwind

colors: {
  custom: {
    50: '#7058ae',
    500: '#20178b',
    950: '#000000',
  },
}

SCSS

$custom: #20178b;
$custom-light: #7058ae;
$custom-dark: #000000;

JSON

{
  "hex": "#20178b",
  "rgb": {
    "r": 32,
    "g": 23,
    "b": 139
  },
  "hsl": {
    "h": 244.655,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32187,
    "c": 0.17765,
    "h": 273.4
  },
  "luminance": 0.02784
}

Semantic roles & 50–950 ramp

primary

#20178B

secondary

#B5BF3F

accent

#EE39E0

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #20178B

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

Preview Lab → · Contrast checker → · Palette generator →