#173380#173380

#173380 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.135 H 264.9°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#173380
RGB	rgb(23, 51, 128)
HSL	hsl(224, 70%, 30%)
HSV	hsv(224, 82%, 50%)
CMYK	cmyk(82%, 60.2%, 0%, 49.8%)
CIE-LAB	lab(24.02, 20.08, -46.41)
CIE-LCH	lch(24.02, 50.56, 293.39°)
OKLab	oklab(35.24% -0.0119 -0.1341)
OKLCH	oklch(35.24% 0.135 264.9)
XYZ	xyz(5.4321, 4.1077, 20.9245)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173380 #806417

analogous

#176880 #173380 #301780

triadic

#173380 #801733 #338017

tetradic

#173380 #801768 #806417 #178030

square

#173380 #801768 #806417 #178030

split-complementary

#173380 #803017 #688017

monochromatic

#050A1A #0E1E4C #173380 #2048B4 #3662DB

Accessibility & contrast

On white

11.53

#173380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#173380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173380

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173380	#FFFFFF	#000000	##FFFFFF
##173380	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E83

Deuteranopia (green-blind)

#00347F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173380;
/* rgb */ color: rgb(23, 51, 128);
/* oklch */ color: oklch(35.2% 0.135 264.9);

Tailwind

colors: {
  custom: {
    50: '#676aa6',
    500: '#173380',
    950: '#000000',
  },
}

SCSS

$custom: #173380;
$custom-light: #676aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#173380",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 128
  },
  "hsl": {
    "h": 224,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35242,
    "c": 0.13461,
    "h": 264.9
  },
  "luminance": 0.04108
}

Semantic roles & 50–950 ramp

primary

#173380

secondary

#B4953E

accent

#BD3BEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173380

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

Preview Lab → · Contrast checker → · Palette generator →