#173281#173281

#173281 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.1% C 0.137 H 265.3°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#173281
RGB	rgb(23, 50, 129)
HSL	hsl(225, 70%, 30%)
HSV	hsv(225, 82%, 51%)
CMYK	cmyk(82.2%, 61.2%, 0%, 49.4%)
CIE-LAB	lab(23.83, 21.19, -47.36)
CIE-LCH	lch(23.83, 51.88, 294.11°)
OKLab	oklab(35.12% -0.0112 -0.1369)
OKLCH	oklch(35.12% 0.137 265.3)
XYZ	xyz(5.4550, 4.0477, 21.2584)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173281 #816617

analogous

#176781 #173281 #311781

triadic

#173281 #811732 #328117

tetradic

#173281 #811767 #816617 #178131

square

#173281 #811767 #816617 #178131

split-complementary

#173281 #813117 #678117

monochromatic

#050A1A #0E1E4D #173281 #2046B5 #3761DB

Accessibility & contrast

On white

11.60

#173281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173281

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173281	#FFFFFF	#000000	##FFFFFF
##173281	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00347F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173281;
/* rgb */ color: rgb(23, 50, 129);
/* oklch */ color: oklch(35.1% 0.137 265.3);

Tailwind

colors: {
  custom: {
    50: '#6769a6',
    500: '#173281',
    950: '#000000',
  },
}

SCSS

$custom: #173281;
$custom-light: #6769a6;
$custom-dark: #000000;

JSON

{
  "hex": "#173281",
  "rgb": {
    "r": 23,
    "g": 50,
    "b": 129
  },
  "hsl": {
    "h": 224.717,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35123,
    "c": 0.13734,
    "h": 265.3
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#173281

secondary

#B5973E

accent

#BF3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173281

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

Preview Lab → · Contrast checker → · Palette generator →