#17308D#17308D

#17308D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.157 H 266.3°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#17308D
RGB	rgb(23, 48, 141)
HSL	hsl(227, 72%, 32%)
HSV	hsv(227, 84%, 55%)
CMYK	cmyk(83.7%, 66%, 0%, 44.7%)
CIE-LAB	lab(24.38, 27.40, -53.95)
CIE-LCH	lch(24.38, 60.51, 296.92°)
OKLab	oklab(35.87% -0.01 -0.1562)
OKLCH	oklch(35.87% 0.157 266.3)
XYZ	xyz(6.2163, 4.2184, 25.6807)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17308D #8D7417

analogous

#176B8D #17308D #39178D

triadic

#17308D #8D1730 #308D17

tetradic

#17308D #8D176B #8D7417 #178D39

square

#17308D #8D176B #8D7417 #178D39

split-complementary

#17308D #8D3917 #6B8D17

monochromatic

#060C24 #0E1E58 #17308D #2042C2 #3F61E0

Accessibility & contrast

On white

11.39

#17308D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#17308D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17308D

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17308D	#FFFFFF	#000000	##FFFFFF
##17308D	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00348B

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #17308d;
/* rgb */ color: rgb(23, 48, 141);
/* oklch */ color: oklch(35.9% 0.157 266.3);

Tailwind

colors: {
  custom: {
    50: '#6b68af',
    500: '#17308d',
    950: '#000000',
  },
}

SCSS

$custom: #17308d;
$custom-light: #6b68af;
$custom-dark: #000000;

JSON

{
  "hex": "#17308d",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 141
  },
  "hsl": {
    "h": 227.288,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3587,
    "c": 0.15654,
    "h": 266.3
  },
  "luminance": 0.04219
}

Semantic roles & 50–950 ramp

primary

#17308D

secondary

#C0A540

accent

#C839EF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #17308D

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

Preview Lab → · Contrast checker → · Palette generator →