#171E4F#171E4F

#171E4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.2% C 0.090 H 272.5°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#171E4F
RGB	rgb(23, 30, 79)
HSL	hsl(233, 55%, 20%)
HSV	hsv(233, 71%, 31%)
CMYK	cmyk(70.9%, 62%, 0%, 69%)
CIE-LAB	lab(13.68, 15.17, -31.18)
CIE-LCH	lch(13.68, 34.68, 295.95°)
OKLab	oklab(26.18% 0.0039 -0.0897)
OKLCH	oklch(26.18% 0.09 272.5)
XYZ	xyz(2.2284, 1.6750, 7.6015)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E4F #4F4817

analogous

#173A4F #171E4F #2C174F

triadic

#171E4F #4F171E #1E4F17

tetradic

#171E4F #4F173A #4F4817 #174F2C

square

#171E4F #4F173A #4F4817 #174F2C

split-complementary

#171E4F #4F2C17 #3A4F17

monochromatic

#070918 #090C20 #171E4F #25307E #3342AE

Accessibility & contrast

On white

15.73

#171E4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#171E4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E4F

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E4F	#FFFFFF	#000000	##FFFFFF
##171E4F	1.00	15.73	1.34	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00214E

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171e4f;
/* rgb */ color: rgb(23, 30, 79);
/* oklch */ color: oklch(26.2% 0.090 272.5);

Tailwind

colors: {
  custom: {
    50: '#5c5981',
    500: '#171e4f',
    950: '#000000',
  },
}

SCSS

$custom: #171e4f;
$custom-light: #5c5981;
$custom-dark: #000000;

JSON

{
  "hex": "#171e4f",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 79
  },
  "hsl": {
    "h": 232.5,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.26176,
    "c": 0.08974,
    "h": 272.5
  },
  "luminance": 0.01675
}

Semantic roles & 50–950 ramp

primary

#171E4F

secondary

#867D3C

accent

#CC4ADE

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #171E4F

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

Preview Lab → · Contrast checker → · Palette generator →