#171A63#171A63

#171A63 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.4% C 0.125 H 272.8°. Best body text is #FFFFFF at 15.39:1 contrast (WCAG AA passes).

Color values

HEX	#171A63
RGB	rgb(23, 26, 99)
HSL	hsl(238, 62%, 24%)
HSV	hsv(238, 77%, 39%)
CMYK	cmyk(76.8%, 73.7%, 0%, 61.2%)
CIE-LAB	lab(14.52, 26.00, -43.26)
CIE-LCH	lch(14.52, 50.47, 301.01°)
OKLab	oklab(27.39% 0.006 -0.1251)
OKLCH	oklch(27.39% 0.125 272.8)
XYZ	xyz(2.9741, 1.8215, 11.9968)
Luminance	0.0182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A63 #636017

analogous

#174063 #171A63 #3A1763

triadic

#171A63 #63171A #1A6317

tetradic

#171A63 #631740 #636017 #17633A

square

#171A63 #631740 #636017 #17633A

split-complementary

#171A63 #633A17 #406317

monochromatic

#060719 #0B0D31 #171A63 #232795 #2E34C6

Accessibility & contrast

On white

15.39

#171A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A63

15.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A63	#FFFFFF	#000000	##FFFFFF
##171A63	1.00	15.39	1.36	15.39
#FFFFFF	15.39	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002865

Deuteranopia (green-blind)

#002162

Tritanopia (blue-blind)

#002E3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171a63;
/* rgb */ color: rgb(23, 26, 99);
/* oklch */ color: oklch(27.4% 0.125 272.8);

Tailwind

colors: {
  custom: {
    50: '#615790',
    500: '#171a63',
    950: '#000000',
  },
}

SCSS

$custom: #171a63;
$custom-light: #615790;
$custom-dark: #000000;

JSON

{
  "hex": "#171a63",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 99
  },
  "hsl": {
    "h": 237.632,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.2739,
    "c": 0.12524,
    "h": 272.8
  },
  "luminance": 0.01822
}

Semantic roles & 50–950 ramp

primary

#171A63

secondary

#9A963C

accent

#DF42E5

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #171A63

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

Preview Lab → · Contrast checker → · Palette generator →