#171E50#171E50

#171E50 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.091 H 272.5°. Best body text is #FFFFFF at 15.70:1 contrast (WCAG AA passes).

Color values

HEX	#171E50
RGB	rgb(23, 30, 80)
HSL	hsl(233, 55%, 20%)
HSV	hsv(233, 71%, 31%)
CMYK	cmyk(71.2%, 62.5%, 0%, 68.6%)
CIE-LAB	lab(13.77, 15.58, -31.72)
CIE-LCH	lch(13.77, 35.34, 296.16°)
OKLab	oklab(26.27% 0.0039 -0.0913)
OKLCH	oklch(26.27% 0.091 272.5)
XYZ	xyz(2.2651, 1.6897, 7.7946)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E50 #504917

analogous

#173A50 #171E50 #2D1750

triadic

#171E50 #50171E #1E5017

tetradic

#171E50 #50173A #504917 #17502D

square

#171E50 #50173A #504917 #17502D

split-complementary

#171E50 #502D17 #3A5017

monochromatic

#070918 #090C20 #171E50 #253080 #3242AF

Accessibility & contrast

On white

15.70

#171E50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#171E50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E50

15.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E50	#FFFFFF	#000000	##FFFFFF
##171E50	1.00	15.70	1.34	15.70
#FFFFFF	15.70	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002652

Deuteranopia (green-blind)

#00214F

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171e50;
/* rgb */ color: rgb(23, 30, 80);
/* oklch */ color: oklch(26.3% 0.091 272.5);

Tailwind

colors: {
  custom: {
    50: '#5c5981',
    500: '#171e50',
    950: '#000000',
  },
}

SCSS

$custom: #171e50;
$custom-light: #5c5981;
$custom-dark: #000000;

JSON

{
  "hex": "#171e50",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 80
  },
  "hsl": {
    "h": 232.632,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26268,
    "c": 0.09134,
    "h": 272.5
  },
  "luminance": 0.0169
}

Semantic roles & 50–950 ramp

primary

#171E50

secondary

#877E3C

accent

#CC49DF

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #171E50

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

Preview Lab → · Contrast checker → · Palette generator →