#17287F#17287F

#17287F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.147 H 268.0°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#17287F
RGB	rgb(23, 40, 127)
HSL	hsl(230, 69%, 29%)
HSV	hsv(230, 82%, 50%)
CMYK	cmyk(81.9%, 68.5%, 0%, 50.2%)
CIE-LAB	lab(20.95, 27.36, -50.81)
CIE-LCH	lch(20.95, 57.71, 298.30°)
OKLab	oklab(32.93% -0.005 -0.1471)
OKLCH	oklch(32.93% 0.147 268)
XYZ	xyz(4.9416, 3.2315, 20.4379)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17287F #7F6E17

analogous

#175C7F #17287F #3A177F

triadic

#17287F #7F1728 #287F17

tetradic

#17287F #7F175C #7F6E17 #177F3A

square

#17287F #7F175C #7F6E17 #177F3A

split-complementary

#17287F #7F3A17 #5C7F17

monochromatic

#05081A #0E184B #17287F #2038B3 #3651DB

Accessibility & contrast

On white

12.76

#17287F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#17287F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17287F

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17287F	#FFFFFF	#000000	##FFFFFF
##17287F	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003782

Deuteranopia (green-blind)

#002D7D

Tritanopia (blue-blind)

#003F50

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #17287f;
/* rgb */ color: rgb(23, 40, 127);
/* oklch */ color: oklch(32.9% 0.147 268.0);

Tailwind

colors: {
  custom: {
    50: '#6862a5',
    500: '#17287f',
    950: '#000000',
  },
}

SCSS

$custom: #17287f;
$custom-light: #6862a5;
$custom-dark: #000000;

JSON

{
  "hex": "#17287f",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 127
  },
  "hsl": {
    "h": 230.192,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32935,
    "c": 0.1472,
    "h": 268
  },
  "luminance": 0.03232
}

Semantic roles & 50–950 ramp

primary

#17287F

secondary

#B4A03E

accent

#CF3CEC

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #17287F

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

Preview Lab → · Contrast checker → · Palette generator →