#171C71#171C71

#171C71 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.142 H 271.1°. Best body text is #FFFFFF at 14.57:1 contrast (WCAG AA passes).

Color values

HEX	#171C71
RGB	rgb(23, 28, 113)
HSL	hsl(237, 66%, 27%)
HSV	hsv(237, 80%, 44%)
CMYK	cmyk(79.6%, 75.2%, 0%, 55.7%)
CIE-LAB	lab(16.53, 29.99, -49.12)
CIE-LCH	lch(16.53, 57.56, 301.40°)
OKLab	oklab(29.29% 0.0028 -0.1422)
OKLCH	oklch(29.29% 0.142 271.1)
XYZ	xyz(3.7482, 2.2045, 15.8476)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C71 #716C17

analogous

#174971 #171C71 #3F1771

triadic

#171C71 #71171C #1C7117

tetradic

#171C71 #711749 #716C17 #17713F

square

#171C71 #711749 #716C17 #17713F

split-complementary

#171C71 #713F17 #497117

monochromatic

#050619 #0D0F3E #171C71 #2129A4 #2E37D4

Accessibility & contrast

On white

14.57

#171C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C71

14.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C71	#FFFFFF	#000000	##FFFFFF
##171C71	1.00	14.57	1.44	14.57
#FFFFFF	14.57	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D74

Deuteranopia (green-blind)

#00246F

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171c71;
/* rgb */ color: rgb(23, 28, 113);
/* oklch */ color: oklch(29.3% 0.142 271.1);

Tailwind

colors: {
  custom: {
    50: '#65599b',
    500: '#171c71',
    950: '#000000',
  },
}

SCSS

$custom: #171c71;
$custom-light: #65599b;
$custom-dark: #000000;

JSON

{
  "hex": "#171c71",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 113
  },
  "hsl": {
    "h": 236.667,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.29289,
    "c": 0.14224,
    "h": 271.1
  },
  "luminance": 0.02205
}

Semantic roles & 50–950 ramp

primary

#171C71

secondary

#A7A13D

accent

#E03FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171C71

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

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