#17257A#17257A

#17257A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.9% C 0.144 H 268.8°. Best body text is #FFFFFF at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#17257A
RGB	rgb(23, 37, 122)
HSL	hsl(232, 68%, 28%)
HSV	hsv(232, 81%, 48%)
CMYK	cmyk(81.1%, 69.7%, 0%, 52.2%)
CIE-LAB	lab(19.68, 27.45, -49.72)
CIE-LCH	lch(19.68, 56.79, 298.90°)
OKLab	oklab(31.86% -0.003 -0.1439)
OKLCH	oklch(31.86% 0.144 268.8)
XYZ	xyz(4.5266, 2.9099, 18.7317)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17257A #7A6C17

analogous

#17567A #17257A #3A177A

triadic

#17257A #7A1725 #257A17

tetradic

#17257A #7A1756 #7A6C17 #177A3A

square

#17257A #7A1756 #7A6C17 #177A3A

split-complementary

#17257A #7A3A17 #567A17

monochromatic

#05081A #0D1547 #17257A #2135AD #334AD9

Accessibility & contrast

On white

13.27

#17257A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#17257A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17257A

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17257A	#FFFFFF	#000000	##FFFFFF
##17257A	1.00	13.27	1.58	13.27
#FFFFFF	13.27	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002B78

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #17257a;
/* rgb */ color: rgb(23, 37, 122);
/* oklch */ color: oklch(31.9% 0.144 268.8);

Tailwind

colors: {
  custom: {
    50: '#675fa1',
    500: '#17257a',
    950: '#000000',
  },
}

SCSS

$custom: #17257a;
$custom-light: #675fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#17257a",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 122
  },
  "hsl": {
    "h": 231.515,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31856,
    "c": 0.14396,
    "h": 268.8
  },
  "luminance": 0.0291
}

Semantic roles & 50–950 ramp

primary

#17257A

secondary

#AF9F3E

accent

#D23DEB

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #17257A

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

Preview Lab → · Contrast checker → · Palette generator →