#173081#173081

#173081 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.140 H 266.0°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#173081
RGB	rgb(23, 48, 129)
HSL	hsl(226, 70%, 30%)
HSV	hsv(226, 82%, 51%)
CMYK	cmyk(82.2%, 62.8%, 0%, 49.4%)
CIE-LAB	lab(23.27, 22.60, -48.26)
CIE-LCH	lch(23.27, 53.29, 295.09°)
OKLab	oklab(34.71% -0.0099 -0.1396)
OKLCH	oklch(34.71% 0.14 266)
XYZ	xyz(5.3714, 3.8804, 21.2305)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173081 #816817

analogous

#176581 #173081 #331781

triadic

#173081 #811730 #308117

tetradic

#173081 #811765 #816817 #178133

square

#173081 #811765 #816817 #178133

split-complementary

#173081 #813317 #658117

monochromatic

#050A1A #0E1D4D #173081 #2043B5 #375EDB

Accessibility & contrast

On white

11.82

#173081 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173081 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173081

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173081	#FFFFFF	#000000	##FFFFFF
##173081	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D84

Deuteranopia (green-blind)

#00337F

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173081;
/* rgb */ color: rgb(23, 48, 129);
/* oklch */ color: oklch(34.7% 0.140 266.0);

Tailwind

colors: {
  custom: {
    50: '#6867a6',
    500: '#173081',
    950: '#000000',
  },
}

SCSS

$custom: #173081;
$custom-light: #6867a6;
$custom-dark: #000000;

JSON

{
  "hex": "#173081",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 129
  },
  "hsl": {
    "h": 225.849,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.34708,
    "c": 0.13992,
    "h": 266
  },
  "luminance": 0.03881
}

Semantic roles & 50–950 ramp

primary

#173081

secondary

#B5993E

accent

#C33BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173081

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

Preview Lab → · Contrast checker → · Palette generator →