#17237B#17237B

#17237B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.6% C 0.148 H 269.2°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#17237B
RGB	rgb(23, 35, 123)
HSL	hsl(233, 68%, 29%)
HSV	hsv(233, 81%, 48%)
CMYK	cmyk(81.3%, 71.5%, 0%, 51.8%)
CIE-LAB	lab(19.28, 29.18, -51.01)
CIE-LCH	lch(19.28, 58.77, 299.77°)
OKLab	oklab(31.6% -0.002 -0.1477)
OKLCH	oklch(31.6% 0.148 269.2)
XYZ	xyz(4.5283, 2.8138, 19.0395)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17237B #7B6F17

analogous

#17557B #17237B #3D177B

triadic

#17237B #7B1723 #237B17

tetradic

#17237B #7B1755 #7B6F17 #177B3D

square

#17237B #7B1755 #7B6F17 #177B3D

split-complementary

#17237B #7B3D17 #557B17

monochromatic

#05071A #0D1447 #17237B #2132AF #3347D9

Accessibility & contrast

On white

13.44

#17237B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#17237B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17237B

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17237B	#FFFFFF	#000000	##FFFFFF
##17237B	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #17237b;
/* rgb */ color: rgb(23, 35, 123);
/* oklch */ color: oklch(31.6% 0.148 269.2);

Tailwind

colors: {
  custom: {
    50: '#675ea2',
    500: '#17237b',
    950: '#000000',
  },
}

SCSS

$custom: #17237b;
$custom-light: #675ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#17237b",
  "rgb": {
    "r": 23,
    "g": 35,
    "b": 123
  },
  "hsl": {
    "h": 232.8,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31598,
    "c": 0.14772,
    "h": 269.2
  },
  "luminance": 0.02814
}

Semantic roles & 50–950 ramp

primary

#17237B

secondary

#B0A23E

accent

#D63CEB

background

#F6F5FA

surface

#EBE9F4

border

#C6C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #17237B

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

Preview Lab → · Contrast checker → · Palette generator →