#171771#171771

#171771 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.5% C 0.148 H 272.0°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#171771
RGB	rgb(23, 23, 113)
HSL	hsl(240, 66%, 27%)
HSV	hsv(240, 80%, 44%)
CMYK	cmyk(79.6%, 79.6%, 0%, 55.7%)
CIE-LAB	lab(15.42, 33.10, -50.95)
CIE-LCH	lch(15.42, 60.76, 303.01°)
OKLab	oklab(28.5% 0.0051 -0.1475)
OKLCH	oklch(28.5% 0.148 272)
XYZ	xyz(3.6394, 1.9868, 15.8113)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171771 #717117

analogous

#174471 #171771 #441771

triadic

#171771 #711717 #177117

tetradic

#171771 #711744 #717117 #177144

square

#171771 #711744 #717117 #177144

split-complementary

#171771 #714417 #447117

monochromatic

#050519 #0D0D3E #171771 #2121A4 #2E2ED4

Accessibility & contrast

On white

15.03

#171771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#171771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171771

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171771	#FFFFFF	#000000	##FFFFFF
##171771	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#003243

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171771;
/* rgb */ color: rgb(23, 23, 113);
/* oklch */ color: oklch(28.5% 0.148 272.0);

Tailwind

colors: {
  custom: {
    50: '#66559b',
    500: '#171771',
    950: '#000000',
  },
}

SCSS

$custom: #171771;
$custom-light: #66559b;
$custom-dark: #000000;

JSON

{
  "hex": "#171771",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 113
  },
  "hsl": {
    "h": 240,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.28501,
    "c": 0.14759,
    "h": 272
  },
  "luminance": 0.01987
}

Semantic roles & 50–950 ramp

primary

#171771

secondary

#A7A73D

accent

#E93FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171771

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

Preview Lab → · Contrast checker → · Palette generator →