#17187F#17187F

#17187F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.165 H 270.6°. Best body text is #FFFFFF at 14.25:1 contrast (WCAG AA passes).

Color values

HEX	#17187F
RGB	rgb(23, 24, 127)
HSL	hsl(239, 69%, 29%)
HSV	hsv(239, 82%, 50%)
CMYK	cmyk(81.9%, 81.1%, 0%, 50.2%)
CIE-LAB	lab(17.31, 37.44, -56.82)
CIE-LCH	lch(17.31, 68.05, 303.38°)
OKLab	oklab(30.32% 0.0018 -0.1645)
OKLCH	oklch(30.32% 0.165 270.6)
XYZ	xyz(4.5094, 2.3672, 20.2938)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17187F #7F7E17

analogous

#174C7F #17187F #4A177F

triadic

#17187F #7F1718 #187F17

tetradic

#17187F #7F174C #7F7E17 #177F4A

square

#17187F #7F174C #7F7E17 #177F4A

split-complementary

#17187F #7F4A17 #4C7F17

monochromatic

#05051A #0E0E4B #17187F #2022B3 #3637DB

Accessibility & contrast

On white

14.25

#17187F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#17187F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17187F

14.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17187F	#FFFFFF	#000000	##FFFFFF
##17187F	1.00	14.25	1.47	14.25
#FFFFFF	14.25	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00257D

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #17187f;
/* rgb */ color: rgb(23, 24, 127);
/* oklch */ color: oklch(30.3% 0.165 270.6);

Tailwind

colors: {
  custom: {
    50: '#6957a5',
    500: '#17187f',
    950: '#000000',
  },
}

SCSS

$custom: #17187f;
$custom-light: #6957a5;
$custom-dark: #000000;

JSON

{
  "hex": "#17187f",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 127
  },
  "hsl": {
    "h": 239.423,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30324,
    "c": 0.16453,
    "h": 270.6
  },
  "luminance": 0.02368
}

Semantic roles & 50–950 ramp

primary

#17187F

secondary

#B4B23E

accent

#EA3CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #17187F

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

Preview Lab → · Contrast checker → · Palette generator →