#171257#171257

#171257 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.7% C 0.118 H 276.6°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#171257
RGB	rgb(23, 18, 87)
HSL	hsl(244, 66%, 21%)
HSV	hsv(244, 79%, 34%)
CMYK	cmyk(73.6%, 79.3%, 0%, 65.9%)
CIE-LAB	lab(11.29, 26.75, -40.53)
CIE-LCH	lch(11.29, 48.56, 303.43°)
OKLab	oklab(24.68% 0.0135 -0.1171)
OKLCH	oklch(24.68% 0.118 276.6)
XYZ	xyz(2.2894, 1.3027, 9.1458)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171257 #525712

analogous

#122F57 #171257 #391257

triadic

#171257 #571712 #125717

tetradic

#171257 #57122F #525712 #125739

square

#171257 #57122F #525712 #125739

split-complementary

#171257 #573912 #2F5712

monochromatic

#070519 #0A0824 #171257 #241C8A #3227BC

Accessibility & contrast

On white

16.66

#171257 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#171257 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171257

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171257	#FFFFFF	#000000	##FFFFFF
##171257	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002159

Deuteranopia (green-blind)

#001B56

Tritanopia (blue-blind)

#002633

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #171257;
/* rgb */ color: rgb(23, 18, 87);
/* oklch */ color: oklch(24.7% 0.118 276.6);

Tailwind

colors: {
  custom: {
    50: '#5f5187',
    500: '#171257',
    950: '#000000',
  },
}

SCSS

$custom: #171257;
$custom-light: #5f5187;
$custom-dark: #000000;

JSON

{
  "hex": "#171257",
  "rgb": {
    "r": 23,
    "g": 18,
    "b": 87
  },
  "hsl": {
    "h": 244.348,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24681,
    "c": 0.11788,
    "h": 276.6
  },
  "luminance": 0.01303
}

Semantic roles & 50–950 ramp

primary

#171257

secondary

#899035

accent

#E93FDC

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #171257

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

Preview Lab → · Contrast checker → · Palette generator →