#171658#171658

#171658 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.114 H 275.2°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#171658
RGB	rgb(23, 22, 88)
HSL	hsl(241, 60%, 22%)
HSV	hsv(241, 75%, 35%)
CMYK	cmyk(73.9%, 75%, 0%, 65.5%)
CIE-LAB	lab(12.35, 24.50, -39.46)
CIE-LCH	lch(12.35, 46.45, 301.83°)
OKLab	oklab(25.47% 0.0105 -0.114)
OKLCH	oklch(25.47% 0.114 275.2)
XYZ	xyz(2.4011, 1.4603, 9.3860)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171658 #575816

analogous

#163658 #171658 #381658

triadic

#171658 #581716 #165817

tetradic

#171658 #581636 #575816 #165838

square

#171658 #581636 #575816 #165838

split-complementary

#171658 #583816 #365816

monochromatic

#060618 #0A0A27 #171658 #242289 #312EBA

Accessibility & contrast

On white

16.25

#171658 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#171658 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171658

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171658	#FFFFFF	#000000	##FFFFFF
##171658	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00235A

Deuteranopia (green-blind)

#001D57

Tritanopia (blue-blind)

#002835

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171658;
/* rgb */ color: rgb(23, 22, 88);
/* oklch */ color: oklch(25.5% 0.114 275.2);

Tailwind

colors: {
  custom: {
    50: '#5f5388',
    500: '#171658',
    950: '#000000',
  },
}

SCSS

$custom: #171658;
$custom-light: #5f5388;
$custom-dark: #000000;

JSON

{
  "hex": "#171658",
  "rgb": {
    "r": 23,
    "g": 22,
    "b": 88
  },
  "hsl": {
    "h": 240.909,
    "s": 60,
    "l": 21.569
  },
  "oklch": {
    "l": 0.25472,
    "c": 0.11449,
    "h": 275.2
  },
  "luminance": 0.01461
}

Semantic roles & 50–950 ramp

primary

#171658

secondary

#8E8F3B

accent

#E345E1

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #171658

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

Preview Lab → · Contrast checker → · Palette generator →