#170C5F#170C5F

#170C5F is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.8% C 0.135 H 276.2°. Best body text is #FFFFFF at 16.74:1 contrast (WCAG AA passes).

Color values

HEX	#170C5F
RGB	rgb(23, 12, 95)
HSL	hsl(248, 78%, 21%)
HSV	hsv(248, 87%, 37%)
CMYK	cmyk(75.8%, 87.4%, 0%, 62.7%)
CIE-LAB	lab(11.07, 32.99, -46.29)
CIE-LCH	lch(11.07, 56.84, 305.48°)
OKLab	oklab(24.81% 0.0145 -0.1338)
OKLCH	oklch(24.81% 0.135 276.2)
XYZ	xyz(2.5497, 1.2711, 10.9352)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170C5F #545F0C

analogous

#0C2A5F #170C5F #400C5F

triadic

#170C5F #5F170C #0C5F17

tetradic

#170C5F #5F0C2A #545F0C #0C5F40

square

#170C5F #5F0C2A #545F0C #0C5F40

split-complementary

#170C5F #5F400C #2A5F0C

monochromatic

#07031B #0A0529 #170C5F #241395 #311ACC

Accessibility & contrast

On white

16.74

#170C5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#170C5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170C5F

16.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170C5F	#FFFFFF	#000000	##FFFFFF
##170C5F	1.00	16.74	1.25	16.74
#FFFFFF	16.74	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002161

Deuteranopia (green-blind)

#001A5E

Tritanopia (blue-blind)

#002636

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #170c5f;
/* rgb */ color: rgb(23, 12, 95);
/* oklch */ color: oklch(24.8% 0.135 276.2);

Tailwind

colors: {
  custom: {
    50: '#624e8d',
    500: '#170c5f',
    950: '#000000',
  },
}

SCSS

$custom: #170c5f;
$custom-light: #624e8d;
$custom-dark: #000000;

JSON

{
  "hex": "#170c5f",
  "rgb": {
    "r": 23,
    "g": 12,
    "b": 95
  },
  "hsl": {
    "h": 247.952,
    "s": 77.57,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24813,
    "c": 0.13457,
    "h": 276.2
  },
  "luminance": 0.01271
}

Semantic roles & 50–950 ramp

primary

#170C5F

secondary

#8B992D

accent

#F434DB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #170C5F

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

Preview Lab → · Contrast checker → · Palette generator →