#17338B#17338B

#17338B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.150 H 265.6°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#17338B
RGB	rgb(23, 51, 139)
HSL	hsl(226, 72%, 32%)
HSV	hsv(226, 83%, 55%)
CMYK	cmyk(83.5%, 63.3%, 0%, 45.5%)
CIE-LAB	lab(24.99, 24.53, -51.70)
CIE-LCH	lch(24.99, 57.23, 295.38°)
OKLab	oklab(36.27% -0.0116 -0.1496)
OKLCH	oklch(36.27% 0.15 265.6)
XYZ	xyz(6.1957, 4.4132, 24.9464)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17338B #8B6F17

analogous

#176D8B #17338B #35178B

triadic

#17338B #8B1733 #338B17

tetradic

#17338B #8B176D #8B6F17 #178B35

square

#17338B #8B176D #8B6F17 #178B35

split-complementary

#17338B #8B3517 #6D8B17

monochromatic

#060C22 #0E2056 #17338B #2046C0 #3D64DF

Accessibility & contrast

On white

11.15

#17338B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#17338B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17338B

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17338B	#FFFFFF	#000000	##FFFFFF
##17338B	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #17338b;
/* rgb */ color: rgb(23, 51, 139);
/* oklch */ color: oklch(36.3% 0.150 265.6);

Tailwind

colors: {
  custom: {
    50: '#6a6aae',
    500: '#17338b',
    950: '#000000',
  },
}

SCSS

$custom: #17338b;
$custom-light: #6a6aae;
$custom-dark: #000000;

JSON

{
  "hex": "#17338b",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 139
  },
  "hsl": {
    "h": 225.517,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.36266,
    "c": 0.15006,
    "h": 265.6
  },
  "luminance": 0.04414
}

Semantic roles & 50–950 ramp

primary

#17338B

secondary

#BFA03F

accent

#C339EE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #17338B

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

Preview Lab → · Contrast checker → · Palette generator →