#173180#173180

#173180 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.137 H 265.6°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#173180
RGB	rgb(23, 49, 128)
HSL	hsl(225, 70%, 30%)
HSV	hsv(225, 82%, 50%)
CMYK	cmyk(82%, 61.7%, 0%, 49.8%)
CIE-LAB	lab(23.46, 21.49, -47.33)
CIE-LCH	lch(23.46, 51.98, 294.42°)
OKLab	oklab(34.82% -0.0105 -0.1368)
OKLCH	oklch(34.82% 0.137 265.6)
XYZ	xyz(5.3466, 3.9367, 20.8960)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173180 #806617

analogous

#176680 #173180 #321780

triadic

#173180 #801731 #318017

tetradic

#173180 #801766 #806617 #178032

square

#173180 #801766 #806617 #178032

split-complementary

#173180 #803217 #668017

monochromatic

#050A1A #0E1D4C #173180 #2045B4 #365FDB

Accessibility & contrast

On white

11.75

#173180 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#173180 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173180

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173180	#FFFFFF	#000000	##FFFFFF
##173180	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D83

Deuteranopia (green-blind)

#00337E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173180;
/* rgb */ color: rgb(23, 49, 128);
/* oklch */ color: oklch(34.8% 0.137 265.6);

Tailwind

colors: {
  custom: {
    50: '#6768a6',
    500: '#173180',
    950: '#000000',
  },
}

SCSS

$custom: #173180;
$custom-light: #6768a6;
$custom-dark: #000000;

JSON

{
  "hex": "#173180",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 128
  },
  "hsl": {
    "h": 225.143,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34821,
    "c": 0.13722,
    "h": 265.6
  },
  "luminance": 0.03937
}

Semantic roles & 50–950 ramp

primary

#173180

secondary

#B4973E

accent

#C13BEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173180

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

Preview Lab → · Contrast checker → · Palette generator →