#17284D#17284D

#17284D is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.4% C 0.072 H 263.9°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#17284D
RGB	rgb(23, 40, 77)
HSL	hsl(221, 54%, 20%)
HSV	hsv(221, 70%, 30%)
CMYK	cmyk(70.1%, 48.1%, 0%, 69.8%)
CIE-LAB	lab(16.68, 6.88, -24.99)
CIE-LCH	lch(16.68, 25.92, 285.38°)
OKLab	oklab(28.4% -0.0077 -0.0713)
OKLCH	oklch(28.4% 0.072 263.9)
XYZ	xyz(2.4512, 2.2353, 7.3220)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17284D #4D3C17

analogous

#17434D #17284D #21174D

triadic

#17284D #4D1728 #284D17

tetradic

#17284D #4D1743 #4D3C17 #174D21

square

#17284D #4D1743 #4D3C17 #174D21

split-complementary

#17284D #4D2117 #434D17

monochromatic

#070C18 #09101E #17284D #25407C #3359AB

Accessibility & contrast

On white

14.51

#17284D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#17284D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17284D

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17284D	#FFFFFF	#000000	##FFFFFF
##17284D	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#172C4E

Deuteranopia (green-blind)

#0E274C

Tritanopia (blue-blind)

#003036

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #17284d;
/* rgb */ color: rgb(23, 40, 77);
/* oklch */ color: oklch(28.4% 0.072 263.9);

Tailwind

colors: {
  custom: {
    50: '#5b617f',
    500: '#17284d',
    950: '#000000',
  },
}

SCSS

$custom: #17284d;
$custom-light: #5b617f;
$custom-dark: #000000;

JSON

{
  "hex": "#17284d",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 77
  },
  "hsl": {
    "h": 221.111,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.284,
    "c": 0.07171,
    "h": 263.9
  },
  "luminance": 0.02236
}

Semantic roles & 50–950 ramp

primary

#17284D

secondary

#846D3C

accent

#AF4ADD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #17284D

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

Preview Lab → · Contrast checker → · Palette generator →