#171A57#171A57

#171A57 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.108 H 273.9°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#171A57
RGB	rgb(23, 26, 87)
HSL	hsl(237, 58%, 22%)
HSV	hsv(237, 74%, 34%)
CMYK	cmyk(73.6%, 70.1%, 0%, 65.9%)
CIE-LAB	lab(13.28, 21.33, -37.26)
CIE-LCH	lch(13.28, 42.93, 299.78°)
OKLab	oklab(26.11% 0.0074 -0.1076)
OKLCH	oklch(26.11% 0.108 273.9)
XYZ	xyz(2.4425, 1.6088, 9.1968)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A57 #575417

analogous

#173A57 #171A57 #341757

triadic

#171A57 #57171A #1A5717

tetradic

#171A57 #57173A #575417 #175734

square

#171A57 #57173A #575417 #175734

split-complementary

#171A57 #573417 #3A5717

monochromatic

#060718 #0A0C27 #171A57 #242887 #3137B8

Accessibility & contrast

On white

15.89

#171A57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#171A57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A57

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A57	#FFFFFF	#000000	##FFFFFF
##171A57	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002559

Deuteranopia (green-blind)

#001F56

Tritanopia (blue-blind)

#002A35

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #171a57;
/* rgb */ color: rgb(23, 26, 87);
/* oklch */ color: oklch(26.1% 0.108 273.9);

Tailwind

colors: {
  custom: {
    50: '#5e5687',
    500: '#171a57',
    950: '#000000',
  },
}

SCSS

$custom: #171a57;
$custom-light: #5e5687;
$custom-dark: #000000;

JSON

{
  "hex": "#171a57",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 87
  },
  "hsl": {
    "h": 237.188,
    "s": 58.182,
    "l": 21.569
  },
  "oklch": {
    "l": 0.26114,
    "c": 0.10782,
    "h": 273.9
  },
  "luminance": 0.01609
}

Semantic roles & 50–950 ramp

primary

#171A57

secondary

#8E8A3C

accent

#DA46E1

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171A57

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

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