#171E80#171E80

#171E80 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.3% C 0.160 H 269.8°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#171E80
RGB	rgb(23, 30, 128)
HSL	hsl(236, 70%, 30%)
HSV	hsv(236, 82%, 50%)
CMYK	cmyk(82%, 76.6%, 0%, 49.8%)
CIE-LAB	lab(18.66, 34.27, -55.20)
CIE-LCH	lch(18.66, 64.98, 301.83°)
OKLab	oklab(31.32% -0.0004 -0.1599)
OKLCH	oklch(31.32% 0.16 269.8)
XYZ	xyz(4.7126, 2.6687, 20.6846)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E80 #807917

analogous

#175380 #171E80 #451780

triadic

#171E80 #80171E #1E8017

tetradic

#171E80 #801753 #807917 #178045

square

#171E80 #801753 #807917 #178045

split-complementary

#171E80 #804517 #538017

monochromatic

#05061A #0E124C #171E80 #202AB4 #3641DB

Accessibility & contrast

On white

13.69

#171E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#171E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E80

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E80	#FFFFFF	#000000	##FFFFFF
##171E80	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003383

Deuteranopia (green-blind)

#00287E

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #171e80;
/* rgb */ color: rgb(23, 30, 128);
/* oklch */ color: oklch(31.3% 0.160 269.8);

Tailwind

colors: {
  custom: {
    50: '#695ba6',
    500: '#171e80',
    950: '#000000',
  },
}

SCSS

$custom: #171e80;
$custom-light: #695ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#171e80",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 128
  },
  "hsl": {
    "h": 236,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31318,
    "c": 0.15991,
    "h": 269.8
  },
  "luminance": 0.02669
}

Semantic roles & 50–950 ramp

primary

#171E80

secondary

#B4AD3E

accent

#E13BEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #171E80

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

Preview Lab → · Contrast checker → · Palette generator →