#171A88#171A88

#171A88 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.174 H 269.8°. Best body text is #FFFFFF at 13.64:1 contrast (WCAG AA passes).

Color values

HEX	#171A88
RGB	rgb(23, 26, 136)
HSL	hsl(238, 71%, 31%)
HSV	hsv(238, 83%, 53%)
CMYK	cmyk(83.1%, 80.9%, 0%, 46.7%)
CIE-LAB	lab(18.79, 39.43, -60.05)
CIE-LCH	lch(18.79, 71.83, 303.29°)
OKLab	oklab(31.68% -0.0006 -0.1739)
OKLCH	oklch(31.68% 0.174 269.8)
XYZ	xyz(5.1652, 2.6979, 23.5363)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A88 #888517

analogous

#175288 #171A88 #4C1788

triadic

#171A88 #88171A #1A8817

tetradic

#171A88 #881752 #888517 #17884C

square

#171A88 #881752 #888517 #17884C

split-complementary

#171A88 #884C17 #528817

monochromatic

#05061F #0E1054 #171A88 #2024BC #3B40DE

Accessibility & contrast

On white

13.64

#171A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#171A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A88

13.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A88	#FFFFFF	#000000	##FFFFFF
##171A88	1.00	13.64	1.54	13.64
#FFFFFF	13.64	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002886

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #171a88;
/* rgb */ color: rgb(23, 26, 136);
/* oklch */ color: oklch(31.7% 0.174 269.8);

Tailwind

colors: {
  custom: {
    50: '#6c59ac',
    500: '#171a88',
    950: '#000000',
  },
}

SCSS

$custom: #171a88;
$custom-light: #6c59ac;
$custom-dark: #000000;

JSON

{
  "hex": "#171a88",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 136
  },
  "hsl": {
    "h": 238.407,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31684,
    "c": 0.17391,
    "h": 269.8
  },
  "luminance": 0.02699
}

Semantic roles & 50–950 ramp

primary

#171A88

secondary

#BCB83F

accent

#E93AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #171A88

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

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