#173680#173680

#173680 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.131 H 263.8°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#173680
RGB	rgb(23, 54, 128)
HSL	hsl(222, 70%, 30%)
HSV	hsv(222, 82%, 50%)
CMYK	cmyk(82%, 57.8%, 0%, 49.8%)
CIE-LAB	lab(24.88, 17.95, -45.01)
CIE-LCH	lch(24.88, 48.46, 291.75°)
OKLab	oklab(35.89% -0.014 -0.1299)
OKLCH	oklch(35.89% 0.131 263.8)
XYZ	xyz(5.5674, 4.3784, 20.9696)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173680 #806117

analogous

#176A80 #173680 #2D1780

triadic

#173680 #801736 #368017

tetradic

#173680 #80176A #806117 #17802D

square

#173680 #80176A #806117 #17802D

split-complementary

#173680 #802D17 #6A8017

monochromatic

#050B1A #0E204C #173680 #204CB4 #3667DB

Accessibility & contrast

On white

11.20

#173680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173680

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173680	#FFFFFF	#000000	##FFFFFF
##173680	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004083

Deuteranopia (green-blind)

#00367F

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173680;
/* rgb */ color: rgb(23, 54, 128);
/* oklch */ color: oklch(35.9% 0.131 263.8);

Tailwind

colors: {
  custom: {
    50: '#676ca5',
    500: '#173680',
    950: '#000000',
  },
}

SCSS

$custom: #173680;
$custom-light: #676ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#173680",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 128
  },
  "hsl": {
    "h": 222.286,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35889,
    "c": 0.13067,
    "h": 263.8
  },
  "luminance": 0.04379
}

Semantic roles & 50–950 ramp

primary

#173680

secondary

#B4923E

accent

#B83BEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #173680

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

Preview Lab → · Contrast checker → · Palette generator →