#170B37#170B37

#170B37 is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.0% C 0.081 H 289.6°. Best body text is #FFFFFF at 18.43:1 contrast (WCAG AA passes).

Color values

HEX	#170B37
RGB	rgb(23, 11, 55)
HSL	hsl(256, 67%, 13%)
HSV	hsv(256, 80%, 22%)
CMYK	cmyk(58.2%, 80%, 0%, 78.4%)
CIE-LAB	lab(6.30, 19.08, -26.26)
CIE-LCH	lch(6.30, 32.46, 306.01°)
OKLab	oklab(19.96% 0.027 -0.076)
OKLCH	oklch(19.96% 0.081 289.6)
XYZ	xyz(1.1624, 0.6973, 3.6870)
Luminance	0.0070 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170B37 #2B370B

analogous

#0B1537 #170B37 #2D0B37

triadic

#170B37 #37170B #0B3717

tetradic

#170B37 #370B15 #2B370B #0B372D

square

#170B37 #370B15 #2B370B #0B372D

split-complementary

#170B37 #372D0B #15370B

monochromatic

#0B051A #0B051A #170B37 #2C156A #421F9D

Accessibility & contrast

On white

18.43

#170B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#170B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170B37

18.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170B37	#FFFFFF	#000000	##FFFFFF
##170B37	1.00	18.43	1.14	18.43
#FFFFFF	18.43	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001538

Deuteranopia (green-blind)

#001336

Tritanopia (blue-blind)

#0C161F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #170b37;
/* rgb */ color: rgb(23, 11, 55);
/* oklch */ color: oklch(20.0% 0.081 289.6);

Tailwind

colors: {
  custom: {
    50: '#584b6e',
    500: '#170b37',
    950: '#000000',
  },
}

SCSS

$custom: #170b37;
$custom-light: #584b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#170b37",
  "rgb": {
    "r": 23,
    "g": 11,
    "b": 55
  },
  "hsl": {
    "h": 256.364,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.19962,
    "c": 0.08065,
    "h": 289.6
  },
  "luminance": 0.00697
}

Semantic roles & 50–950 ramp

primary

#170B37

secondary

#60742A

accent

#EA3EBB

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #170B37

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

Preview Lab → · Contrast checker → · Palette generator →