#173980#173980

#173980 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.127 H 262.6°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#173980
RGB	rgb(23, 57, 128)
HSL	hsl(221, 70%, 30%)
HSV	hsv(221, 82%, 50%)
CMYK	cmyk(82%, 55.5%, 0%, 49.8%)
CIE-LAB	lab(25.76, 15.83, -43.58)
CIE-LCH	lch(25.76, 46.37, 289.96°)
OKLab	oklab(36.55% -0.0163 -0.1257)
OKLCH	oklch(36.55% 0.127 262.6)
XYZ	xyz(5.7114, 4.6663, 21.0176)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173980 #805E17

analogous

#176E80 #173980 #291780

triadic

#173980 #801739 #398017

tetradic

#173980 #80176E #805E17 #178029

square

#173980 #80176E #805E17 #178029

split-complementary

#173980 #802917 #6E8017

monochromatic

#050C1A #0E224C #173980 #2050B4 #366CDB

Accessibility & contrast

On white

10.86

#173980 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#173980 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173980

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173980	#FFFFFF	#000000	##FFFFFF
##173980	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004282

Deuteranopia (green-blind)

#00387F

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173980;
/* rgb */ color: rgb(23, 57, 128);
/* oklch */ color: oklch(36.6% 0.127 262.6);

Tailwind

colors: {
  custom: {
    50: '#676ea5',
    500: '#173980',
    950: '#000000',
  },
}

SCSS

$custom: #173980;
$custom-light: #676ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#173980",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 128
  },
  "hsl": {
    "h": 220.571,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36553,
    "c": 0.12671,
    "h": 262.6
  },
  "luminance": 0.04667
}

Semantic roles & 50–950 ramp

primary

#173980

secondary

#B48E3E

accent

#B33BEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #173980

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

Preview Lab → · Contrast checker → · Palette generator →