#17358F#17358F

#17358F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.153 H 265.2°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#17358F
RGB	rgb(23, 53, 143)
HSL	hsl(225, 72%, 33%)
HSV	hsv(225, 84%, 56%)
CMYK	cmyk(83.9%, 62.9%, 0%, 43.9%)
CIE-LAB	lab(25.89, 24.75, -52.71)
CIE-LCH	lch(25.89, 58.23, 295.16°)
OKLab	oklab(37.05% -0.0128 -0.1525)
OKLCH	oklch(37.05% 0.153 265.2)
XYZ	xyz(6.5826, 4.7107, 26.5436)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17358F #8F7117

analogous

#17718F #17358F #35178F

triadic

#17358F #8F1735 #358F17

tetradic

#17358F #8F1771 #8F7117 #178F35

square

#17358F #8F1771 #8F7117 #178F35

split-complementary

#17358F #8F3517 #718F17

monochromatic

#060E26 #0F215A #17358F #1F49C4 #4068E0

Accessibility & contrast

On white

10.81

#17358F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#17358F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17358F

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17358F	#FFFFFF	#000000	##FFFFFF
##17358F	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #17358f;
/* rgb */ color: rgb(23, 53, 143);
/* oklch */ color: oklch(37.0% 0.153 265.2);

Tailwind

colors: {
  custom: {
    50: '#6b6bb1',
    500: '#17358f',
    950: '#000000',
  },
}

SCSS

$custom: #17358f;
$custom-light: #6b6bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#17358f",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 143
  },
  "hsl": {
    "h": 225,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37047,
    "c": 0.15305,
    "h": 265.2
  },
  "luminance": 0.04712
}

Semantic roles & 50–950 ramp

primary

#17358F

secondary

#C1A141

accent

#C139EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #17358F

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

Preview Lab → · Contrast checker → · Palette generator →