#17284C#17284C

#17284C is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.3% C 0.070 H 263.5°. Best body text is #FFFFFF at 14.54:1 contrast (WCAG AA passes).

Color values

HEX	#17284C
RGB	rgb(23, 40, 76)
HSL	hsl(221, 54%, 19%)
HSV	hsv(221, 70%, 30%)
CMYK	cmyk(69.7%, 47.4%, 0%, 70.2%)
CIE-LAB	lab(16.61, 6.46, -24.42)
CIE-LCH	lch(16.61, 25.26, 284.83°)
OKLab	oklab(28.33% -0.0079 -0.0696)
OKLCH	oklch(28.33% 0.07 263.5)
XYZ	xyz(2.4162, 2.2213, 7.1375)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17284C #4C3B17

analogous

#17434C #17284C #21174C

triadic

#17284C #4C1728 #284C17

tetradic

#17284C #4C1743 #4C3B17 #174C21

square

#17284C #4C1743 #4C3B17 #174C21

split-complementary

#17284C #4C2117 #434C17

monochromatic

#070C17 #090F1D #17284C #25417B #3359AA

Accessibility & contrast

On white

14.54

#17284C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#17284C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17284C

14.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17284C	#FFFFFF	#000000	##FFFFFF
##17284C	1.00	14.54	1.44	14.54
#FFFFFF	14.54	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#172C4D

Deuteranopia (green-blind)

#0F274B

Tritanopia (blue-blind)

#003036

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #17284c;
/* rgb */ color: rgb(23, 40, 76);
/* oklch */ color: oklch(28.3% 0.070 263.5);

Tailwind

colors: {
  custom: {
    50: '#5a617e',
    500: '#17284c',
    950: '#000000',
  },
}

SCSS

$custom: #17284c;
$custom-light: #5a617e;
$custom-dark: #000000;

JSON

{
  "hex": "#17284c",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 76
  },
  "hsl": {
    "h": 220.755,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.28326,
    "c": 0.07008,
    "h": 263.5
  },
  "luminance": 0.02222
}

Semantic roles & 50–950 ramp

primary

#17284C

secondary

#836C3C

accent

#AE4BDD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #17284C

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

Preview Lab → · Contrast checker → · Palette generator →