#17308E#17308E

#17308E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.0% C 0.158 H 266.4°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#17308E
RGB	rgb(23, 48, 142)
HSL	hsl(227, 72%, 32%)
HSV	hsv(227, 84%, 56%)
CMYK	cmyk(83.8%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(24.48, 27.79, -54.41)
CIE-LCH	lch(24.48, 61.10, 297.05°)
OKLab	oklab(35.97% -0.01 -0.1576)
OKLCH	oklch(35.97% 0.158 266.4)
XYZ	xyz(6.2911, 4.2483, 26.0744)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17308E #8E7517

analogous

#176C8E #17308E #3A178E

triadic

#17308E #8E1730 #308E17

tetradic

#17308E #8E176C #8E7517 #178E3A

square

#17308E #8E176C #8E7517 #178E3A

split-complementary

#17308E #8E3A17 #6C8E17

monochromatic

#060C25 #0E1E59 #17308E #2042C3 #3F61E0

Accessibility & contrast

On white

11.35

#17308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#17308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17308E

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17308E	#FFFFFF	#000000	##FFFFFF
##17308E	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #17308e;
/* rgb */ color: rgb(23, 48, 142);
/* oklch */ color: oklch(36.0% 0.158 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b68b0',
    500: '#17308e',
    950: '#000000',
  },
}

SCSS

$custom: #17308e;
$custom-light: #6b68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17308e",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 227.395,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35969,
    "c": 0.15789,
    "h": 266.4
  },
  "luminance": 0.04249
}

Semantic roles & 50–950 ramp

primary

#17308E

secondary

#C0A540

accent

#C939EF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #17308E

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

Preview Lab → · Contrast checker → · Palette generator →