#172570#172570

#172570 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 30.8% C 0.130 H 268.9°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#172570
RGB	rgb(23, 37, 112)
HSL	hsl(231, 66%, 26%)
HSV	hsv(231, 79%, 44%)
CMYK	cmyk(79.5%, 67%, 0%, 56.1%)
CIE-LAB	lab(18.69, 23.49, -44.92)
CIE-LCH	lch(18.69, 50.69, 297.61°)
OKLab	oklab(30.83% -0.0024 -0.1299)
OKLCH	oklch(30.83% 0.13 268.9)
XYZ	xyz(3.9385, 2.6747, 15.6348)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172570 #706217

analogous

#175270 #172570 #361770

triadic

#172570 #701725 #257017

tetradic

#172570 #701752 #706217 #177036

square

#172570 #701752 #706217 #177036

split-complementary

#172570 #703617 #527017

monochromatic

#050819 #0D143D #172570 #2136A3 #2D48D4

Accessibility & contrast

On white

13.68

#172570 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172570 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172570

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172570	#FFFFFF	#000000	##FFFFFF
##172570	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003272

Deuteranopia (green-blind)

#00296F

Tritanopia (blue-blind)

#003946

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172570;
/* rgb */ color: rgb(23, 37, 112);
/* oklch */ color: oklch(30.8% 0.130 268.9);

Tailwind

colors: {
  custom: {
    50: '#645f9a',
    500: '#172570',
    950: '#000000',
  },
}

SCSS

$custom: #172570;
$custom-light: #645f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#172570",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 112
  },
  "hsl": {
    "h": 230.562,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.3083,
    "c": 0.12992,
    "h": 268.9
  },
  "luminance": 0.02675
}

Semantic roles & 50–950 ramp

primary

#172570

secondary

#A6953D

accent

#CE3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #172570

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

Preview Lab → · Contrast checker → · Palette generator →