#173080#173080

#173080 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.6% C 0.139 H 265.9°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#173080
RGB	rgb(23, 48, 128)
HSL	hsl(226, 70%, 30%)
HSV	hsv(226, 82%, 50%)
CMYK	cmyk(82%, 62.5%, 0%, 49.8%)
CIE-LAB	lab(23.18, 22.19, -47.78)
CIE-LCH	lch(23.18, 52.68, 294.91°)
OKLab	oklab(34.61% -0.0099 -0.1382)
OKLCH	oklch(34.61% 0.139 265.9)
XYZ	xyz(5.3052, 3.8540, 20.8822)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173080 #806717

analogous

#176580 #173080 #321780

triadic

#173080 #801730 #308017

tetradic

#173080 #801765 #806717 #178032

square

#173080 #801765 #806717 #178032

split-complementary

#173080 #803217 #658017

monochromatic

#050A1A #0E1D4C #173080 #2043B4 #365EDB

Accessibility & contrast

On white

11.86

#173080 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#173080 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173080

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173080	#FFFFFF	#000000	##FFFFFF
##173080	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C83

Deuteranopia (green-blind)

#00337E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173080;
/* rgb */ color: rgb(23, 48, 128);
/* oklch */ color: oklch(34.6% 0.139 265.9);

Tailwind

colors: {
  custom: {
    50: '#6767a6',
    500: '#173080',
    950: '#000000',
  },
}

SCSS

$custom: #173080;
$custom-light: #6767a6;
$custom-dark: #000000;

JSON

{
  "hex": "#173080",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 128
  },
  "hsl": {
    "h": 225.714,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34613,
    "c": 0.13851,
    "h": 265.9
  },
  "luminance": 0.03855
}

Semantic roles & 50–950 ramp

primary

#173080

secondary

#B4983E

accent

#C23BEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173080

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

Preview Lab → · Contrast checker → · Palette generator →