#171E73#171E73

#171E73 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.143 H 270.6°. Best body text is #FFFFFF at 14.29:1 contrast (WCAG AA passes).

Color values

HEX	#171E73
RGB	rgb(23, 30, 115)
HSL	hsl(235, 67%, 27%)
HSV	hsv(235, 80%, 45%)
CMYK	cmyk(80%, 73.9%, 0%, 54.9%)
CIE-LAB	lab(17.22, 29.44, -49.28)
CIE-LCH	lch(17.22, 57.40, 300.86°)
OKLab	oklab(29.85% 0.0015 -0.1427)
OKLCH	oklch(29.85% 0.143 270.6)
XYZ	xyz(3.9111, 2.3481, 16.4634)
Luminance	0.0235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E73 #736C17

analogous

#174C73 #171E73 #3E1773

triadic

#171E73 #73171E #1E7317

tetradic

#171E73 #73174C #736C17 #17733E

square

#171E73 #73174C #736C17 #17733E

split-complementary

#171E73 #733E17 #4C7317

monochromatic

#05071A #0D1140 #171E73 #212BA6 #2F3CD5

Accessibility & contrast

On white

14.29

#171E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#171E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E73

14.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E73	#FFFFFF	#000000	##FFFFFF
##171E73	1.00	14.29	1.47	14.29
#FFFFFF	14.29	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F76

Deuteranopia (green-blind)

#002671

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171e73;
/* rgb */ color: rgb(23, 30, 115);
/* oklch */ color: oklch(29.9% 0.143 270.6);

Tailwind

colors: {
  custom: {
    50: '#655a9c',
    500: '#171e73',
    950: '#000000',
  },
}

SCSS

$custom: #171e73;
$custom-light: #655a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#171e73",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 115
  },
  "hsl": {
    "h": 235.435,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29851,
    "c": 0.14268,
    "h": 270.6
  },
  "luminance": 0.02349
}

Semantic roles & 50–950 ramp

primary

#171E73

secondary

#A9A03D

accent

#DD3EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #171E73

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

Preview Lab → · Contrast checker → · Palette generator →