#17187A#17187A

#17187A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.158 H 271.0°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#17187A
RGB	rgb(23, 24, 122)
HSL	hsl(239, 68%, 28%)
HSV	hsv(239, 81%, 48%)
CMYK	cmyk(81.1%, 80.3%, 0%, 52.2%)
CIE-LAB	lab(16.70, 35.70, -54.63)
CIE-LCH	lch(16.70, 65.26, 303.17°)
OKLab	oklab(29.72% 0.0029 -0.1582)
OKLCH	oklch(29.72% 0.158 271)
XYZ	xyz(4.1916, 2.2401, 18.6200)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17187A #7A7917

analogous

#17497A #17187A #47177A

triadic

#17187A #7A1718 #187A17

tetradic

#17187A #7A1749 #7A7917 #177A47

square

#17187A #7A1749 #7A7917 #177A47

split-complementary

#17187A #7A4717 #497A17

monochromatic

#05051A #0D0E47 #17187A #2122AD #3335D9

Accessibility & contrast

On white

14.50

#17187A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#17187A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17187A

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17187A	#FFFFFF	#000000	##FFFFFF
##17187A	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7D

Deuteranopia (green-blind)

#002478

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #17187a;
/* rgb */ color: rgb(23, 24, 122);
/* oklch */ color: oklch(29.7% 0.158 271.0);

Tailwind

colors: {
  custom: {
    50: '#6857a2',
    500: '#17187a',
    950: '#000000',
  },
}

SCSS

$custom: #17187a;
$custom-light: #6857a2;
$custom-dark: #000000;

JSON

{
  "hex": "#17187a",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 122
  },
  "hsl": {
    "h": 239.394,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.2972,
    "c": 0.15822,
    "h": 271
  },
  "luminance": 0.02241
}

Semantic roles & 50–950 ramp

primary

#17187A

secondary

#AFAE3E

accent

#E93DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #17187A

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

Preview Lab → · Contrast checker → · Palette generator →