#171A7B#171A7B

#171A7B is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.1% C 0.158 H 270.7°. Best body text is #FFFFFF at 14.28:1 contrast (WCAG AA passes).

Color values

HEX	#171A7B
RGB	rgb(23, 26, 123)
HSL	hsl(238, 68%, 29%)
HSV	hsv(238, 81%, 48%)
CMYK	cmyk(81.3%, 78.9%, 0%, 51.8%)
CIE-LAB	lab(17.23, 34.89, -54.40)
CIE-LCH	lch(17.23, 64.62, 302.68°)
OKLab	oklab(30.13% 0.002 -0.1575)
OKLCH	oklch(30.13% 0.158 270.7)
XYZ	xyz(4.2967, 2.3505, 18.9623)
Luminance	0.0235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A7B #7B7817

analogous

#174C7B #171A7B #46177B

triadic

#171A7B #7B171A #1A7B17

tetradic

#171A7B #7B174C #7B7817 #177B46

square

#171A7B #7B174C #7B7817 #177B46

split-complementary

#171A7B #7B4617 #4C7B17

monochromatic

#05051A #0D0F47 #171A7B #2125AF #3338D9

Accessibility & contrast

On white

14.28

#171A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#171A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A7B

14.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A7B	#FFFFFF	#000000	##FFFFFF
##171A7B	1.00	14.28	1.47	14.28
#FFFFFF	14.28	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7E

Deuteranopia (green-blind)

#002579

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171a7b;
/* rgb */ color: rgb(23, 26, 123);
/* oklch */ color: oklch(30.1% 0.158 270.7);

Tailwind

colors: {
  custom: {
    50: '#6858a2',
    500: '#171a7b',
    950: '#000000',
  },
}

SCSS

$custom: #171a7b;
$custom-light: #6858a2;
$custom-dark: #000000;

JSON

{
  "hex": "#171a7b",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 123
  },
  "hsl": {
    "h": 238.2,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30128,
    "c": 0.15754,
    "h": 270.7
  },
  "luminance": 0.02351
}

Semantic roles & 50–950 ramp

primary

#171A7B

secondary

#B0AC3E

accent

#E63CEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171A7B

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

Preview Lab → · Contrast checker → · Palette generator →