#171A7C#171A7C

#171A7C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.2% C 0.159 H 270.6°. Best body text is #FFFFFF at 14.24:1 contrast (WCAG AA passes).

Color values

HEX	#171A7C
RGB	rgb(23, 26, 124)
HSL	hsl(238, 69%, 29%)
HSV	hsv(238, 81%, 49%)
CMYK	cmyk(81.5%, 79%, 0%, 51.4%)
CIE-LAB	lab(17.35, 35.24, -54.84)
CIE-LCH	lch(17.35, 65.19, 302.73°)
OKLab	oklab(30.25% 0.0018 -0.1588)
OKLCH	oklch(30.25% 0.159 270.6)
XYZ	xyz(4.3596, 2.3757, 19.2937)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A7C #7C7917

analogous

#174D7C #171A7C #47177C

triadic

#171A7C #7C171A #1A7C17

tetradic

#171A7C #7C174D #7C7917 #177C47

square

#171A7C #7C174D #7C7917 #177C47

split-complementary

#171A7C #7C4717 #4D7C17

monochromatic

#05051A #0D0F48 #171A7C #2125B0 #3439D9

Accessibility & contrast

On white

14.24

#171A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#171A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A7C

14.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A7C	#FFFFFF	#000000	##FFFFFF
##171A7C	1.00	14.24	1.48	14.24
#FFFFFF	14.24	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307F

Deuteranopia (green-blind)

#00257A

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #171a7c;
/* rgb */ color: rgb(23, 26, 124);
/* oklch */ color: oklch(30.2% 0.159 270.6);

Tailwind

colors: {
  custom: {
    50: '#6858a3',
    500: '#171a7c',
    950: '#000000',
  },
}

SCSS

$custom: #171a7c;
$custom-light: #6858a3;
$custom-dark: #000000;

JSON

{
  "hex": "#171a7c",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 124
  },
  "hsl": {
    "h": 238.218,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30246,
    "c": 0.15883,
    "h": 270.6
  },
  "luminance": 0.02376
}

Semantic roles & 50–950 ramp

primary

#171A7C

secondary

#B1AD3E

accent

#E63CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171A7C

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

Preview Lab → · Contrast checker → · Palette generator →