#170D51#170D51

#170D51 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.2% C 0.115 H 279.2°. Best body text is #FFFFFF at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#170D51
RGB	rgb(23, 13, 81)
HSL	hsl(249, 72%, 18%)
HSV	hsv(249, 84%, 32%)
CMYK	cmyk(71.6%, 84%, 0%, 68.2%)
CIE-LAB	lab(9.51, 27.65, -39.37)
CIE-LCH	lch(9.51, 48.11, 305.08°)
OKLab	oklab(23.22% 0.0184 -0.1137)
OKLCH	oklch(23.22% 0.115 279.2)
XYZ	xyz(1.9820, 1.0639, 7.8839)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D51 #47510D

analogous

#0D2551 #170D51 #390D51

triadic

#170D51 #51170D #0D5117

tetradic

#170D51 #510D25 #47510D #0D5139

square

#170D51 #510D25 #47510D #0D5139

split-complementary

#170D51 #51390D #25510D

monochromatic

#07041A #08051C #170D51 #261586 #351EBA

Accessibility & contrast

On white

17.32

#170D51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#170D51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D51

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D51	#FFFFFF	#000000	##FFFFFF
##170D51	1.00	17.32	1.21	17.32
#FFFFFF	17.32	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D53

Deuteranopia (green-blind)

#001850

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170d51;
/* rgb */ color: rgb(23, 13, 81);
/* oklch */ color: oklch(23.2% 0.115 279.2);

Tailwind

colors: {
  custom: {
    50: '#5e4d83',
    500: '#170d51',
    950: '#000000',
  },
}

SCSS

$custom: #170d51;
$custom-light: #5e4d83;
$custom-dark: #000000;

JSON

{
  "hex": "#170d51",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 81
  },
  "hsl": {
    "h": 248.824,
    "s": 72.34,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23215,
    "c": 0.11516,
    "h": 279.2
  },
  "luminance": 0.01064
}

Semantic roles & 50–950 ramp

primary

#170D51

secondary

#7E8C2E

accent

#EF39D4

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #170D51

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

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