#171D90#171D90

#171D90 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.1% C 0.181 H 269.1°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#171D90
RGB	rgb(23, 29, 144)
HSL	hsl(237, 72%, 33%)
HSV	hsv(237, 84%, 56%)
CMYK	cmyk(84%, 79.9%, 0%, 43.5%)
CIE-LAB	lab(20.34, 40.51, -62.48)
CIE-LCH	lch(20.34, 74.46, 302.96°)
OKLab	oklab(33.05% -0.0028 -0.181)
OKLCH	oklch(33.05% 0.181 269.1)
XYZ	xyz(5.8250, 3.0738, 26.6664)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D90 #908A17

analogous

#175990 #171D90 #4E1790

triadic

#171D90 #90171D #1D9017

tetradic

#171D90 #901759 #908A17 #17904E

square

#171D90 #901759 #908A17 #17904E

split-complementary

#171D90 #904E17 #599017

monochromatic

#060826 #0F125B #171D90 #1F28C5 #4149E1

Accessibility & contrast

On white

13.00

#171D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#171D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D90

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D90	#FFFFFF	#000000	##FFFFFF
##171D90	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003793

Deuteranopia (green-blind)

#002B8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #171d90;
/* rgb */ color: rgb(23, 29, 144);
/* oklch */ color: oklch(33.1% 0.181 269.1);

Tailwind

colors: {
  custom: {
    50: '#6e5bb2',
    500: '#171d90',
    950: '#000000',
  },
}

SCSS

$custom: #171d90;
$custom-light: #6e5bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#171d90",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 144
  },
  "hsl": {
    "h": 237.025,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33051,
    "c": 0.18103,
    "h": 269.1
  },
  "luminance": 0.03075
}

Semantic roles & 50–950 ramp

primary

#171D90

secondary

#C1BB42

accent

#E639EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171D90

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

Preview Lab → · Contrast checker → · Palette generator →