#17337D#17337D

#17337D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.130 H 264.7°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#17337D
RGB	rgb(23, 51, 125)
HSL	hsl(224, 69%, 29%)
HSV	hsv(224, 82%, 49%)
CMYK	cmyk(81.6%, 59.2%, 0%, 51%)
CIE-LAB	lab(23.77, 18.85, -44.93)
CIE-LCH	lch(23.77, 48.72, 292.75°)
OKLab	oklab(34.97% -0.012 -0.1297)
OKLCH	oklch(34.97% 0.13 264.7)
XYZ	xyz(5.2375, 4.0299, 19.8999)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17337D #7D6117

analogous

#17667D #17337D #2E177D

triadic

#17337D #7D1733 #337D17

tetradic

#17337D #7D1766 #7D6117 #177D2E

square

#17337D #7D1766 #7D6117 #177D2E

split-complementary

#17337D #7D2E17 #667D17

monochromatic

#050B1A #0D1E49 #17337D #2148B1 #3562DA

Accessibility & contrast

On white

11.63

#17337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#17337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17337D

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17337D	#FFFFFF	#000000	##FFFFFF
##17337D	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #17337d;
/* rgb */ color: rgb(23, 51, 125);
/* oklch */ color: oklch(35.0% 0.130 264.7);

Tailwind

colors: {
  custom: {
    50: '#666aa3',
    500: '#17337d',
    950: '#000000',
  },
}

SCSS

$custom: #17337d;
$custom-light: #666aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#17337d",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 223.529,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.34972,
    "c": 0.1303,
    "h": 264.7
  },
  "luminance": 0.0403
}

Semantic roles & 50–950 ramp

primary

#17337D

secondary

#B2923E

accent

#BC3CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17337D

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

Preview Lab → · Contrast checker → · Palette generator →