#17287D#17287D

#17287D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.144 H 268.0°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#17287D
RGB	rgb(23, 40, 125)
HSL	hsl(230, 69%, 29%)
HSV	hsv(230, 82%, 49%)
CMYK	cmyk(81.6%, 68%, 0%, 51%)
CIE-LAB	lab(20.75, 26.57, -49.87)
CIE-LCH	lch(20.75, 56.50, 298.05°)
OKLab	oklab(32.73% -0.0049 -0.1443)
OKLCH	oklch(32.73% 0.144 268)
XYZ	xyz(4.8125, 3.1799, 19.7582)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17287D #7D6C17

analogous

#175B7D #17287D #39177D

triadic

#17287D #7D1728 #287D17

tetradic

#17287D #7D175B #7D6C17 #177D39

square

#17287D #7D175B #7D6C17 #177D39

split-complementary

#17287D #7D3917 #5B7D17

monochromatic

#05081A #0D1749 #17287D #2139B1 #3550DA

Accessibility & contrast

On white

12.84

#17287D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#17287D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17287D

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17287D	#FFFFFF	#000000	##FFFFFF
##17287D	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003780

Deuteranopia (green-blind)

#002D7B

Tritanopia (blue-blind)

#003F4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #17287d;
/* rgb */ color: rgb(23, 40, 125);
/* oklch */ color: oklch(32.7% 0.144 268.0);

Tailwind

colors: {
  custom: {
    50: '#6762a4',
    500: '#17287d',
    950: '#000000',
  },
}

SCSS

$custom: #17287d;
$custom-light: #6762a4;
$custom-dark: #000000;

JSON

{
  "hex": "#17287d",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 125
  },
  "hsl": {
    "h": 230,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3273,
    "c": 0.14443,
    "h": 268
  },
  "luminance": 0.0318
}

Semantic roles & 50–950 ramp

primary

#17287D

secondary

#B29E3E

accent

#CE3CEC

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #17287D

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

Preview Lab → · Contrast checker → · Palette generator →