#17337A#17337A

#17337A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.7% C 0.126 H 264.4°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#17337A
RGB	rgb(23, 51, 122)
HSL	hsl(223, 68%, 28%)
HSV	hsv(223, 81%, 48%)
CMYK	cmyk(81.1%, 58.2%, 0%, 52.2%)
CIE-LAB	lab(23.52, 17.61, -43.44)
CIE-LCH	lch(23.52, 46.87, 292.07°)
OKLab	oklab(34.71% -0.0122 -0.1254)
OKLCH	oklch(34.71% 0.126 264.4)
XYZ	xyz(5.0488, 3.9544, 18.9058)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17337A #7A5E17

analogous

#17647A #17337A #2C177A

triadic

#17337A #7A1733 #337A17

tetradic

#17337A #7A1764 #7A5E17 #177A2C

square

#17337A #7A1764 #7A5E17 #177A2C

split-complementary

#17337A #7A2C17 #647A17

monochromatic

#050B1A #0D1D47 #17337A #2149AD #3362D9

Accessibility & contrast

On white

11.73

#17337A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#17337A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17337A

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17337A	#FFFFFF	#000000	##FFFFFF
##17337A	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7C

Deuteranopia (green-blind)

#003479

Tritanopia (blue-blind)

#004551

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #17337a;
/* rgb */ color: rgb(23, 51, 122);
/* oklch */ color: oklch(34.7% 0.126 264.4);

Tailwind

colors: {
  custom: {
    50: '#656aa1',
    500: '#17337a',
    950: '#000000',
  },
}

SCSS

$custom: #17337a;
$custom-light: #656aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#17337a",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 122
  },
  "hsl": {
    "h": 223.03,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34705,
    "c": 0.12596,
    "h": 264.4
  },
  "luminance": 0.03955
}

Semantic roles & 50–950 ramp

primary

#17337A

secondary

#AF8F3E

accent

#BA3DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17337A

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

Preview Lab → · Contrast checker → · Palette generator →