#171B60#171B60

#171B60 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.120 H 272.7°. Best body text is #FFFFFF at 15.42:1 contrast (WCAG AA passes).

Color values

HEX	#171B60
RGB	rgb(23, 27, 96)
HSL	hsl(237, 61%, 23%)
HSV	hsv(237, 76%, 38%)
CMYK	cmyk(76%, 71.9%, 0%, 62.4%)
CIE-LAB	lab(14.46, 24.16, -41.37)
CIE-LCH	lch(14.46, 47.91, 300.28°)
OKLab	oklab(27.25% 0.0057 -0.1196)
OKLCH	oklch(27.25% 0.12 272.7)
XYZ	xyz(2.8559, 1.8103, 11.2630)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B60 #605C17

analogous

#173F60 #171B60 #371760

triadic

#171B60 #60171B #1B6017

tetradic

#171B60 #60173F #605C17 #176037

square

#171B60 #60173F #605C17 #176037

split-complementary

#171B60 #603717 #3F6017

monochromatic

#060719 #0B0D2F #171B60 #232991 #2F37C3

Accessibility & contrast

On white

15.42

#171B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B60

15.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B60	#FFFFFF	#000000	##FFFFFF
##171B60	1.00	15.42	1.36	15.42
#FFFFFF	15.42	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002862

Deuteranopia (green-blind)

#00215F

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171b60;
/* rgb */ color: rgb(23, 27, 96);
/* oklch */ color: oklch(27.2% 0.120 272.7);

Tailwind

colors: {
  custom: {
    50: '#61578e',
    500: '#171b60',
    950: '#000000',
  },
}

SCSS

$custom: #171b60;
$custom-light: #61578e;
$custom-dark: #000000;

JSON

{
  "hex": "#171b60",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 96
  },
  "hsl": {
    "h": 236.712,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.27248,
    "c": 0.11972,
    "h": 272.7
  },
  "luminance": 0.01811
}

Semantic roles & 50–950 ramp

primary

#171B60

secondary

#97923C

accent

#DC43E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #171B60

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

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