#170D64#170D64

#170D64 is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.6% C 0.140 H 275.1°. Best body text is #FFFFFF at 16.43:1 contrast (WCAG AA passes).

Color values

HEX	#170D64
RGB	rgb(23, 13, 100)
HSL	hsl(247, 77%, 22%)
HSV	hsv(247, 87%, 39%)
CMYK	cmyk(77%, 87%, 0%, 60.8%)
CIE-LAB	lab(11.89, 34.15, -48.27)
CIE-LCH	lch(11.89, 59.13, 305.28°)
OKLab	oklab(25.57% 0.0125 -0.1395)
OKLCH	oklch(25.57% 0.14 275.1)
XYZ	xyz(2.7968, 1.3898, 12.1750)
Luminance	0.0139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D64 #5A640D

analogous

#0D2E64 #170D64 #430D64

triadic

#170D64 #64170D #0D6417

tetradic

#170D64 #640D2E #5A640D #0D6443

square

#170D64 #640D2E #5A640D #0D6443

split-complementary

#170D64 #64430D #2E640D

monochromatic

#06041B #0B062E #170D64 #23149A #301BD0

Accessibility & contrast

On white

16.43

#170D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#170D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D64

16.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D64	#FFFFFF	#000000	##FFFFFF
##170D64	1.00	16.43	1.28	16.43
#FFFFFF	16.43	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002366

Deuteranopia (green-blind)

#001B63

Tritanopia (blue-blind)

#002939

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #170d64;
/* rgb */ color: rgb(23, 13, 100);
/* oklch */ color: oklch(25.6% 0.140 275.1);

Tailwind

colors: {
  custom: {
    50: '#634f91',
    500: '#170d64',
    950: '#000000',
  },
}

SCSS

$custom: #170d64;
$custom-light: #634f91;
$custom-dark: #000000;

JSON

{
  "hex": "#170d64",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 100
  },
  "hsl": {
    "h": 246.897,
    "s": 76.991,
    "l": 22.157
  },
  "oklch": {
    "l": 0.25565,
    "c": 0.14011,
    "h": 275.1
  },
  "luminance": 0.0139
}

Semantic roles & 50–950 ramp

primary

#170D64

secondary

#919E2F

accent

#F434DE

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #170D64

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

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