#171E4E#171E4E

#171E4E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.088 H 272.5°. Best body text is #FFFFFF at 15.76:1 contrast (WCAG AA passes).

Color values

HEX	#171E4E
RGB	rgb(23, 30, 78)
HSL	hsl(232, 54%, 20%)
HSV	hsv(232, 71%, 31%)
CMYK	cmyk(70.5%, 61.5%, 0%, 69.4%)
CIE-LAB	lab(13.59, 14.77, -30.63)
CIE-LCH	lch(13.59, 34.01, 295.73°)
OKLab	oklab(26.09% 0.0038 -0.0881)
OKLCH	oklch(26.09% 0.088 272.5)
XYZ	xyz(2.1923, 1.6606, 7.4112)
Luminance	0.0166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.97

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E4E #4E4717

analogous

#17394E #171E4E #2C174E

triadic

#171E4E #4E171E #1E4E17

tetradic

#171E4E #4E1739 #4E4717 #174E2C

square

#171E4E #4E1739 #4E4717 #174E2C

split-complementary

#171E4E #4E2C17 #394E17

monochromatic

#070918 #090C1F #171E4E #25307D #3342AD

Accessibility & contrast

On white

15.76

#171E4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#171E4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E4E

15.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E4E	#FFFFFF	#000000	##FFFFFF
##171E4E	1.00	15.76	1.33	15.76
#FFFFFF	15.76	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002550

Deuteranopia (green-blind)

#00204D

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171e4e;
/* rgb */ color: rgb(23, 30, 78);
/* oklch */ color: oklch(26.1% 0.088 272.5);

Tailwind

colors: {
  custom: {
    50: '#5b5980',
    500: '#171e4e',
    950: '#000000',
  },
}

SCSS

$custom: #171e4e;
$custom-light: #5b5980;
$custom-dark: #000000;

JSON

{
  "hex": "#171e4e",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 78
  },
  "hsl": {
    "h": 232.364,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.26085,
    "c": 0.08814,
    "h": 272.5
  },
  "luminance": 0.01661
}

Semantic roles & 50–950 ramp

primary

#171E4E

secondary

#857C3C

accent

#CB4ADE

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #171E4E

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

Preview Lab → · Contrast checker → · Palette generator →