#17287E#17287E

#17287E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.146 H 268.0°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#17287E
RGB	rgb(23, 40, 126)
HSL	hsl(230, 69%, 29%)
HSV	hsv(230, 82%, 49%)
CMYK	cmyk(81.7%, 68.3%, 0%, 50.6%)
CIE-LAB	lab(20.85, 26.96, -50.34)
CIE-LCH	lch(20.85, 57.11, 298.18°)
OKLab	oklab(32.83% -0.005 -0.1457)
OKLCH	oklch(32.83% 0.146 268)
XYZ	xyz(4.8767, 3.2055, 20.0963)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17287E #7E6D17

analogous

#175C7E #17287E #3A177E

triadic

#17287E #7E1728 #287E17

tetradic

#17287E #7E175C #7E6D17 #177E3A

square

#17287E #7E175C #7E6D17 #177E3A

split-complementary

#17287E #7E3A17 #5C7E17

monochromatic

#05081A #0E184A #17287E #2038B2 #3550DA

Accessibility & contrast

On white

12.80

#17287E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#17287E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17287E

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17287E	#FFFFFF	#000000	##FFFFFF
##17287E	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #17287e;
/* rgb */ color: rgb(23, 40, 126);
/* oklch */ color: oklch(32.8% 0.146 268.0);

Tailwind

colors: {
  custom: {
    50: '#6862a4',
    500: '#17287e',
    950: '#000000',
  },
}

SCSS

$custom: #17287e;
$custom-light: #6862a4;
$custom-dark: #000000;

JSON

{
  "hex": "#17287e",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 126
  },
  "hsl": {
    "h": 230.097,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32832,
    "c": 0.14582,
    "h": 268
  },
  "luminance": 0.03206
}

Semantic roles & 50–950 ramp

primary

#17287E

secondary

#B39F3E

accent

#CF3CEC

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #17287E

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

Preview Lab → · Contrast checker → · Palette generator →