#171E8B#171E8B

#171E8B is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.6% C 0.174 H 269.3°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#171E8B
RGB	rgb(23, 30, 139)
HSL	hsl(236, 72%, 32%)
HSV	hsv(236, 83%, 55%)
CMYK	cmyk(83.5%, 78.4%, 0%, 45.5%)
CIE-LAB	lab(19.94, 38.20, -60.02)
CIE-LCH	lch(19.94, 71.15, 302.48°)
OKLab	oklab(32.6% -0.0022 -0.1739)
OKLCH	oklch(32.6% 0.174 269.3)
XYZ	xyz(5.4762, 2.9741, 24.7065)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E8B #8B8417

analogous

#17588B #171E8B #4A178B

triadic

#171E8B #8B171E #1E8B17

tetradic

#171E8B #8B1758 #8B8417 #178B4A

square

#171E8B #8B1758 #8B8417 #178B4A

split-complementary

#171E8B #8B4A17 #588B17

monochromatic

#060722 #0E1356 #171E8B #2029C0 #3D47DF

Accessibility & contrast

On white

13.17

#171E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#171E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E8B

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E8B	#FFFFFF	#000000	##FFFFFF
##171E8B	1.00	13.17	1.60	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #171e8b;
/* rgb */ color: rgb(23, 30, 139);
/* oklch */ color: oklch(32.6% 0.174 269.3);

Tailwind

colors: {
  custom: {
    50: '#6c5bae',
    500: '#171e8b',
    950: '#000000',
  },
}

SCSS

$custom: #171e8b;
$custom-light: #6c5bae;
$custom-dark: #000000;

JSON

{
  "hex": "#171e8b",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 139
  },
  "hsl": {
    "h": 236.379,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32598,
    "c": 0.1739,
    "h": 269.3
  },
  "luminance": 0.02975
}

Semantic roles & 50–950 ramp

primary

#171E8B

secondary

#BFB73F

accent

#E339EE

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #171E8B

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

Preview Lab → · Contrast checker → · Palette generator →