#17317B#17317B

#17317B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.130 H 265.3°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#17317B
RGB	rgb(23, 49, 123)
HSL	hsl(224, 68%, 29%)
HSV	hsv(224, 81%, 48%)
CMYK	cmyk(81.3%, 60.2%, 0%, 51.8%)
CIE-LAB	lab(23.03, 19.45, -44.87)
CIE-LCH	lch(23.03, 48.91, 293.43°)
OKLab	oklab(34.36% -0.0107 -0.1296)
OKLCH	oklch(34.36% 0.13 265.3)
XYZ	xyz(5.0256, 3.8083, 19.2053)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17317B #7B6117

analogous

#17637B #17317B #2F177B

triadic

#17317B #7B1731 #317B17

tetradic

#17317B #7B1763 #7B6117 #177B2F

square

#17317B #7B1763 #7B6117 #177B2F

split-complementary

#17317B #7B2F17 #637B17

monochromatic

#050A1A #0D1C47 #17317B #2146AF #335ED9

Accessibility & contrast

On white

11.92

#17317B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#17317B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17317B

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17317B	#FFFFFF	#000000	##FFFFFF
##17317B	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7E

Deuteranopia (green-blind)

#00327A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #17317b;
/* rgb */ color: rgb(23, 49, 123);
/* oklch */ color: oklch(34.4% 0.130 265.3);

Tailwind

colors: {
  custom: {
    50: '#6668a2',
    500: '#17317b',
    950: '#000000',
  },
}

SCSS

$custom: #17317b;
$custom-light: #6668a2;
$custom-dark: #000000;

JSON

{
  "hex": "#17317b",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 123
  },
  "hsl": {
    "h": 224.4,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.34361,
    "c": 0.13005,
    "h": 265.3
  },
  "luminance": 0.03809
}

Semantic roles & 50–950 ramp

primary

#17317B

secondary

#B0923E

accent

#BE3CEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17317B

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

Preview Lab → · Contrast checker → · Palette generator →