#171D5E#171D5E

#171D5E is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.114 H 272.2°. Best body text is #FFFFFF at 15.29:1 contrast (WCAG AA passes).

Color values

HEX	#171D5E
RGB	rgb(23, 29, 94)
HSL	hsl(235, 61%, 23%)
HSV	hsv(235, 76%, 37%)
CMYK	cmyk(75.5%, 69.1%, 0%, 63.1%)
CIE-LAB	lab(14.78, 21.96, -39.51)
CIE-LCH	lch(14.78, 45.20, 299.07°)
OKLab	oklab(27.42% 0.0044 -0.1141)
OKLCH	oklch(27.42% 0.114 272.2)
XYZ	xyz(2.8124, 1.8688, 10.8000)
Luminance	0.0187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D5E #5E5817

analogous

#17405E #171D5E #35175E

triadic

#171D5E #5E171D #1D5E17

tetradic

#171D5E #5E1740 #5E5817 #175E35

square

#171D5E #5E1740 #5E5817 #175E35

split-complementary

#171D5E #5E3517 #405E17

monochromatic

#060819 #0B0E2D #171D5E #232C8F #2F3BC0

Accessibility & contrast

On white

15.29

#171D5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171D5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D5E

15.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D5E	#FFFFFF	#000000	##FFFFFF
##171D5E	1.00	15.29	1.37	15.29
#FFFFFF	15.29	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002960

Deuteranopia (green-blind)

#00225D

Tritanopia (blue-blind)

#002E3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171d5e;
/* rgb */ color: rgb(23, 29, 94);
/* oklch */ color: oklch(27.4% 0.114 272.2);

Tailwind

colors: {
  custom: {
    50: '#60598c',
    500: '#171d5e',
    950: '#000000',
  },
}

SCSS

$custom: #171d5e;
$custom-light: #60598c;
$custom-dark: #000000;

JSON

{
  "hex": "#171d5e",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 94
  },
  "hsl": {
    "h": 234.93,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.27423,
    "c": 0.11421,
    "h": 272.2
  },
  "luminance": 0.01869
}

Semantic roles & 50–950 ramp

primary

#171D5E

secondary

#958D3C

accent

#D644E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #171D5E

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

Preview Lab → · Contrast checker → · Palette generator →