#171B89#171B89

#171B89 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.174 H 269.7°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#171B89
RGB	rgb(23, 27, 137)
HSL	hsl(238, 71%, 31%)
HSV	hsv(238, 83%, 54%)
CMYK	cmyk(83.2%, 80.3%, 0%, 46.3%)
CIE-LAB	lab(19.10, 39.21, -60.15)
CIE-LCH	lch(19.10, 71.81, 303.10°)
OKLab	oklab(31.94% -0.001 -0.1742)
OKLCH	oklch(31.94% 0.174 269.7)
XYZ	xyz(5.2591, 2.7716, 23.9198)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B89 #898517

analogous

#175489 #171B89 #4C1789

triadic

#171B89 #89171B #1B8917

tetradic

#171B89 #891754 #898517 #17894C

square

#171B89 #891754 #898517 #17894C

split-complementary

#171B89 #894C17 #548917

monochromatic

#050620 #0E1155 #171B89 #2025BD #3C42DE

Accessibility & contrast

On white

13.51

#171B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#171B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B89

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B89	#FFFFFF	#000000	##FFFFFF
##171B89	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348C

Deuteranopia (green-blind)

#002887

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #171b89;
/* rgb */ color: rgb(23, 27, 137);
/* oklch */ color: oklch(31.9% 0.174 269.7);

Tailwind

colors: {
  custom: {
    50: '#6c59ad',
    500: '#171b89',
    950: '#000000',
  },
}

SCSS

$custom: #171b89;
$custom-light: #6c59ad;
$custom-dark: #000000;

JSON

{
  "hex": "#171b89",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 137
  },
  "hsl": {
    "h": 237.895,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31939,
    "c": 0.17423,
    "h": 269.7
  },
  "luminance": 0.02772
}

Semantic roles & 50–950 ramp

primary

#171B89

secondary

#BDB83F

accent

#E83AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171B89

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

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