#171E8E#171E8E

#171E8E is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.0% C 0.178 H 269.1°. Best body text is #FFFFFF at 13.02:1 contrast (WCAG AA passes).

Color values

HEX	#171E8E
RGB	rgb(23, 30, 142)
HSL	hsl(236, 72%, 32%)
HSV	hsv(236, 84%, 56%)
CMYK	cmyk(83.8%, 78.9%, 0%, 44.3%)
CIE-LAB	lab(20.29, 39.25, -61.31)
CIE-LCH	lch(20.29, 72.80, 302.63°)
OKLab	oklab(32.95% -0.0028 -0.1776)
OKLCH	oklch(32.95% 0.178 269.1)
XYZ	xyz(5.6984, 3.0630, 25.8768)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E8E #8E8717

analogous

#17598E #171E8E #4C178E

triadic

#171E8E #8E171E #1E8E17

tetradic

#171E8E #8E1759 #8E8717 #178E4C

square

#171E8E #8E1759 #8E8717 #178E4C

split-complementary

#171E8E #8E4C17 #598E17

monochromatic

#060825 #0E1359 #171E8E #2029C3 #3F49E0

Accessibility & contrast

On white

13.02

#171E8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#171E8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E8E

13.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E8E	#FFFFFF	#000000	##FFFFFF
##171E8E	1.00	13.02	1.61	13.02
#FFFFFF	13.02	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003791

Deuteranopia (green-blind)

#002B8C

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #171e8e;
/* rgb */ color: rgb(23, 30, 142);
/* oklch */ color: oklch(33.0% 0.178 269.1);

Tailwind

colors: {
  custom: {
    50: '#6d5cb0',
    500: '#171e8e',
    950: '#000000',
  },
}

SCSS

$custom: #171e8e;
$custom-light: #6d5cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#171e8e",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 142
  },
  "hsl": {
    "h": 236.471,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32952,
    "c": 0.17764,
    "h": 269.1
  },
  "luminance": 0.03064
}

Semantic roles & 50–950 ramp

primary

#171E8E

secondary

#C0B940

accent

#E439EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#080411

muted

#7B7980

Preview Lab

Preview with #171E8E

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

Preview Lab → · Contrast checker → · Palette generator →