#17287A#17287A

#17287A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.4% C 0.140 H 268.1°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#17287A
RGB	rgb(23, 40, 122)
HSL	hsl(230, 68%, 28%)
HSV	hsv(230, 81%, 48%)
CMYK	cmyk(81.1%, 67.2%, 0%, 52.2%)
CIE-LAB	lab(20.46, 25.38, -48.44)
CIE-LCH	lch(20.46, 54.69, 297.65°)
OKLab	oklab(32.42% -0.0048 -0.1402)
OKLCH	oklch(32.42% 0.14 268.1)
XYZ	xyz(4.6238, 3.1044, 18.7641)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17287A #7A6917

analogous

#17597A #17287A #37177A

triadic

#17287A #7A1728 #287A17

tetradic

#17287A #7A1759 #7A6917 #177A37

square

#17287A #7A1759 #7A6917 #177A37

split-complementary

#17287A #7A3717 #597A17

monochromatic

#05081A #0D1747 #17287A #2139AD #334FD9

Accessibility & contrast

On white

12.95

#17287A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#17287A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17287A

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17287A	#FFFFFF	#000000	##FFFFFF
##17287A	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367D

Deuteranopia (green-blind)

#002D78

Tritanopia (blue-blind)

#003E4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #17287a;
/* rgb */ color: rgb(23, 40, 122);
/* oklch */ color: oklch(32.4% 0.140 268.1);

Tailwind

colors: {
  custom: {
    50: '#6661a1',
    500: '#17287a',
    950: '#000000',
  },
}

SCSS

$custom: #17287a;
$custom-light: #6661a1;
$custom-dark: #000000;

JSON

{
  "hex": "#17287a",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 122
  },
  "hsl": {
    "h": 229.697,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.32425,
    "c": 0.14026,
    "h": 268.1
  },
  "luminance": 0.03105
}

Semantic roles & 50–950 ramp

primary

#17287A

secondary

#AF9C3E

accent

#CD3DEB

background

#F6F5FA

surface

#EBEAF3

border

#C6C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #17287A

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

Preview Lab → · Contrast checker → · Palette generator →