#173883#173883

#173883 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.132 H 263.4°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#173883
RGB	rgb(23, 56, 131)
HSL	hsl(222, 70%, 30%)
HSV	hsv(222, 82%, 51%)
CMYK	cmyk(82.4%, 57.3%, 0%, 48.6%)
CIE-LAB	lab(25.71, 17.78, -45.55)
CIE-LCH	lch(25.71, 48.89, 291.32°)
OKLab	oklab(36.59% -0.0153 -0.1315)
OKLCH	oklch(36.59% 0.132 263.4)
XYZ	xyz(5.8628, 4.6485, 22.0566)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173883 #836217

analogous

#176E83 #173883 #2C1783

triadic

#173883 #831738 #388317

tetradic

#173883 #83176E #836217 #17832C

square

#173883 #83176E #836217 #17832C

split-complementary

#173883 #832C17 #6E8317

monochromatic

#050B1B #0E224F #173883 #204EB7 #386ADC

Accessibility & contrast

On white

10.88

#173883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#173883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173883

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173883	#FFFFFF	#000000	##FFFFFF
##173883	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003882

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173883;
/* rgb */ color: rgb(23, 56, 131);
/* oklch */ color: oklch(36.6% 0.132 263.4);

Tailwind

colors: {
  custom: {
    50: '#686ea8',
    500: '#173883',
    950: '#000000',
  },
}

SCSS

$custom: #173883;
$custom-light: #686ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#173883",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 131
  },
  "hsl": {
    "h": 221.667,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36588,
    "c": 0.13234,
    "h": 263.4
  },
  "luminance": 0.04649
}

Semantic roles & 50–950 ramp

primary

#173883

secondary

#B7923F

accent

#B73BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173883

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

Preview Lab → · Contrast checker → · Palette generator →