#17318D#17318D

#17318D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.155 H 266.1°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#17318D
RGB	rgb(23, 49, 141)
HSL	hsl(227, 72%, 32%)
HSV	hsv(227, 84%, 55%)
CMYK	cmyk(83.7%, 65.2%, 0%, 44.7%)
CIE-LAB	lab(24.64, 26.71, -53.52)
CIE-LCH	lch(24.64, 59.81, 296.52°)
OKLab	oklab(36.06% -0.0105 -0.1549)
OKLCH	oklch(36.06% 0.155 266.1)
XYZ	xyz(6.2577, 4.3011, 25.6945)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17318D #8D7317

analogous

#176C8D #17318D #38178D

triadic

#17318D #8D1731 #318D17

tetradic

#17318D #8D176C #8D7317 #178D38

square

#17318D #8D176C #8D7317 #178D38

split-complementary

#17318D #8D3817 #6C8D17

monochromatic

#060C24 #0E1F58 #17318D #2043C2 #3F62E0

Accessibility & contrast

On white

11.29

#17318D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#17318D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17318D

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17318D	#FFFFFF	#000000	##FFFFFF
##17318D	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00358B

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #17318d;
/* rgb */ color: rgb(23, 49, 141);
/* oklch */ color: oklch(36.1% 0.155 266.1);

Tailwind

colors: {
  custom: {
    50: '#6b68af',
    500: '#17318d',
    950: '#000000',
  },
}

SCSS

$custom: #17318d;
$custom-light: #6b68af;
$custom-dark: #000000;

JSON

{
  "hex": "#17318d",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 141
  },
  "hsl": {
    "h": 226.78,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36063,
    "c": 0.15531,
    "h": 266.1
  },
  "luminance": 0.04302
}

Semantic roles & 50–950 ramp

primary

#17318D

secondary

#C0A440

accent

#C739EF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #17318D

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

Preview Lab → · Contrast checker → · Palette generator →