#17255B#17255B

#17255B is a dark, moderate blue. Relative luminance 0.023; OKLCH L 28.8% C 0.099 H 268.5°. Best body text is #FFFFFF at 14.46:1 contrast (WCAG AA passes).

Color values

HEX	#17255B
RGB	rgb(23, 37, 91)
HSL	hsl(228, 60%, 22%)
HSV	hsv(228, 75%, 36%)
CMYK	cmyk(74.7%, 59.3%, 0%, 64.3%)
CIE-LAB	lab(16.80, 14.92, -34.22)
CIE-LCH	lch(16.80, 37.33, 293.55°)
OKLab	oklab(28.83% -0.0025 -0.0985)
OKLCH	oklch(28.83% 0.099 268.5)
XYZ	xyz(2.9026, 2.2603, 10.1788)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17255B #5B4D17

analogous

#17475B #17255B #2B175B

triadic

#17255B #5B1725 #255B17

tetradic

#17255B #5B1747 #5B4D17 #175B2B

square

#17255B #5B1747 #5B4D17 #175B2B

split-complementary

#17255B #5B2B17 #475B17

monochromatic

#060A18 #0B112A #17255B #23398C #304DBD

Accessibility & contrast

On white

14.46

#17255B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#17255B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17255B

14.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17255B	#FFFFFF	#000000	##FFFFFF
##17255B	1.00	14.46	1.45	14.46
#FFFFFF	14.46	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D5D

Deuteranopia (green-blind)

#00265A

Tritanopia (blue-blind)

#00323C

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #17255b;
/* rgb */ color: rgb(23, 37, 91);
/* oklch */ color: oklch(28.8% 0.099 268.5);

Tailwind

colors: {
  custom: {
    50: '#5e5f8a',
    500: '#17255b',
    950: '#000000',
  },
}

SCSS

$custom: #17255b;
$custom-light: #5e5f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#17255b",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 91
  },
  "hsl": {
    "h": 227.647,
    "s": 59.649,
    "l": 22.353
  },
  "oklch": {
    "l": 0.28833,
    "c": 0.09853,
    "h": 268.5
  },
  "luminance": 0.02261
}

Semantic roles & 50–950 ramp

primary

#17255B

secondary

#92803C

accent

#C245E3

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05040C

muted

#79797D

Preview Lab

Preview with #17255B

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

Preview Lab → · Contrast checker → · Palette generator →