#172971#172971

#172971 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 31.7% C 0.126 H 267.6°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#172971
RGB	rgb(23, 41, 113)
HSL	hsl(228, 66%, 27%)
HSV	hsv(228, 80%, 44%)
CMYK	cmyk(79.6%, 63.7%, 0%, 55.7%)
CIE-LAB	lab(19.88, 21.06, -43.62)
CIE-LCH	lch(19.88, 48.43, 295.77°)
OKLab	oklab(31.74% -0.0052 -0.126)
OKLCH	oklch(31.74% 0.126 267.6)
XYZ	xyz(4.1259, 2.9598, 15.9734)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172971 #715F17

analogous

#175671 #172971 #321771

triadic

#172971 #711729 #297117

tetradic

#172971 #711756 #715F17 #177132

square

#172971 #711756 #715F17 #177132

split-complementary

#172971 #713217 #567117

monochromatic

#050919 #0D173E #172971 #213BA4 #2E4FD4

Accessibility & contrast

On white

13.19

#172971 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172971 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172971

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172971	#FFFFFF	#000000	##FFFFFF
##172971	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003473

Deuteranopia (green-blind)

#002C70

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172971;
/* rgb */ color: rgb(23, 41, 113);
/* oklch */ color: oklch(31.7% 0.126 267.6);

Tailwind

colors: {
  custom: {
    50: '#64629a',
    500: '#172971',
    950: '#000000',
  },
}

SCSS

$custom: #172971;
$custom-light: #64629a;
$custom-dark: #000000;

JSON

{
  "hex": "#172971",
  "rgb": {
    "r": 23,
    "g": 41,
    "b": 113
  },
  "hsl": {
    "h": 228,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.3174,
    "c": 0.12615,
    "h": 267.6
  },
  "luminance": 0.0296
}

Semantic roles & 50–950 ramp

primary

#172971

secondary

#A7923D

accent

#C73FE9

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #172971

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

Preview Lab → · Contrast checker → · Palette generator →