#17288E#17288E

#17288E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.167 H 267.9°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#17288E
RGB	rgb(23, 40, 142)
HSL	hsl(231, 72%, 32%)
HSV	hsv(231, 84%, 56%)
CMYK	cmyk(83.8%, 71.8%, 0%, 44.3%)
CIE-LAB	lab(22.49, 33.12, -57.69)
CIE-LCH	lch(22.49, 66.52, 299.86°)
OKLab	oklab(34.52% -0.0062 -0.1672)
OKLCH	oklch(34.52% 0.167 267.9)
XYZ	xyz(5.9929, 3.6520, 25.9750)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17288E #8E7D17

analogous

#17638E #17288E #42178E

triadic

#17288E #8E1728 #288E17

tetradic

#17288E #8E1763 #8E7D17 #178E42

square

#17288E #8E1763 #8E7D17 #178E42

split-complementary

#17288E #8E4217 #638E17

monochromatic

#060A25 #0E1959 #17288E #2037C3 #3F56E0

Accessibility & contrast

On white

12.13

#17288E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#17288E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17288E

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17288E	#FFFFFF	#000000	##FFFFFF
##17288E	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#00308C

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #17288e;
/* rgb */ color: rgb(23, 40, 142);
/* oklch */ color: oklch(34.5% 0.167 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c62b0',
    500: '#17288e',
    950: '#000000',
  },
}

SCSS

$custom: #17288e;
$custom-light: #6c62b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17288e",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 142
  },
  "hsl": {
    "h": 231.429,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.34517,
    "c": 0.16728,
    "h": 267.9
  },
  "luminance": 0.03653
}

Semantic roles & 50–950 ramp

primary

#17288E

secondary

#C0AE40

accent

#D539EF

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #17288E

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

Preview Lab → · Contrast checker → · Palette generator →