#171E5A#171E5A

#171E5A is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.107 H 272.0°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#171E5A
RGB	rgb(23, 30, 90)
HSL	hsl(234, 59%, 22%)
HSV	hsv(234, 74%, 35%)
CMYK	cmyk(74.4%, 66.7%, 0%, 64.7%)
CIE-LAB	lab(14.67, 19.65, -37.01)
CIE-LCH	lch(14.67, 41.90, 297.96°)
OKLab	oklab(27.22% 0.0038 -0.1068)
OKLCH	oklch(27.22% 0.107 272)
XYZ	xyz(2.6625, 1.8486, 9.8874)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E5A #5A5317

analogous

#17405A #171E5A #31175A

triadic

#171E5A #5A171E #1E5A17

tetradic

#171E5A #5A1740 #5A5317 #175A31

square

#171E5A #5A1740 #5A5317 #175A31

split-complementary

#171E5A #5A3117 #405A17

monochromatic

#060818 #0B0E29 #171E5A #232E8B #303EBB

Accessibility & contrast

On white

15.33

#171E5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171E5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E5A

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E5A	#FFFFFF	#000000	##FFFFFF
##171E5A	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285C

Deuteranopia (green-blind)

#002259

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171e5a;
/* rgb */ color: rgb(23, 30, 90);
/* oklch */ color: oklch(27.2% 0.107 272.0);

Tailwind

colors: {
  custom: {
    50: '#5f5989',
    500: '#171e5a',
    950: '#000000',
  },
}

SCSS

$custom: #171e5a;
$custom-light: #5f5989;
$custom-dark: #000000;

JSON

{
  "hex": "#171e5a",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 90
  },
  "hsl": {
    "h": 233.731,
    "s": 59.292,
    "l": 22.157
  },
  "oklch": {
    "l": 0.27222,
    "c": 0.10687,
    "h": 272
  },
  "luminance": 0.01849
}

Semantic roles & 50–950 ramp

primary

#171E5A

secondary

#91883C

accent

#D245E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #171E5A

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

Preview Lab → · Contrast checker → · Palette generator →