#17286D#17286D

#17286D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.1% C 0.122 H 267.9°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#17286D
RGB	rgb(23, 40, 109)
HSL	hsl(228, 65%, 26%)
HSV	hsv(228, 79%, 43%)
CMYK	cmyk(78.9%, 63.3%, 0%, 57.3%)
CIE-LAB	lab(19.24, 20.14, -42.08)
CIE-LCH	lch(19.24, 46.65, 295.58°)
OKLab	oklab(31.15% -0.0045 -0.1215)
OKLCH	oklch(31.15% 0.122 267.9)
XYZ	xyz(3.8715, 2.8034, 14.8021)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17286D #6D5C17

analogous

#17536D #17286D #31176D

triadic

#17286D #6D1728 #286D17

tetradic

#17286D #6D1753 #6D5C17 #176D31

square

#17286D #6D1753 #6D5C17 #176D31

split-complementary

#17286D #6D3117 #536D17

monochromatic

#050919 #0C153A #17286D #223BA0 #2C4DD2

Accessibility & contrast

On white

13.45

#17286D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#17286D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17286D

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17286D	#FFFFFF	#000000	##FFFFFF
##17286D	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336F

Deuteranopia (green-blind)

#002B6C

Tritanopia (blue-blind)

#003A46

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #17286d;
/* rgb */ color: rgb(23, 40, 109);
/* oklch */ color: oklch(31.1% 0.122 267.9);

Tailwind

colors: {
  custom: {
    50: '#636197',
    500: '#17286d',
    950: '#000000',
  },
}

SCSS

$custom: #17286d;
$custom-light: #636197;
$custom-dark: #000000;

JSON

{
  "hex": "#17286d",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 109
  },
  "hsl": {
    "h": 228.14,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.31149,
    "c": 0.12163,
    "h": 267.9
  },
  "luminance": 0.02804
}

Semantic roles & 50–950 ramp

primary

#17286D

secondary

#A38F3D

accent

#C740E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #17286D

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

Preview Lab → · Contrast checker → · Palette generator →