#17337C#17337C

#17337C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.9% C 0.129 H 264.6°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#17337C
RGB	rgb(23, 51, 124)
HSL	hsl(223, 69%, 29%)
HSV	hsv(223, 81%, 49%)
CMYK	cmyk(81.5%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(23.69, 18.44, -44.44)
CIE-LCH	lch(23.69, 48.11, 292.53°)
OKLab	oklab(34.88% -0.0121 -0.1283)
OKLCH	oklch(34.88% 0.129 264.6)
XYZ	xyz(5.1740, 4.0044, 19.5651)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17337C #7C6017

analogous

#17667C #17337C #2E177C

triadic

#17337C #7C1733 #337C17

tetradic

#17337C #7C1766 #7C6017 #177C2E

square

#17337C #7C1766 #7C6017 #177C2E

split-complementary

#17337C #7C2E17 #667C17

monochromatic

#050B1A #0D1E48 #17337C #2148B0 #3462D9

Accessibility & contrast

On white

11.66

#17337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#17337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17337C

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17337C	#FFFFFF	#000000	##FFFFFF
##17337C	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7E

Deuteranopia (green-blind)

#00347B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #17337c;
/* rgb */ color: rgb(23, 51, 124);
/* oklch */ color: oklch(34.9% 0.129 264.6);

Tailwind

colors: {
  custom: {
    50: '#666aa3',
    500: '#17337c',
    950: '#000000',
  },
}

SCSS

$custom: #17337c;
$custom-light: #666aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#17337c",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 223.366,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34883,
    "c": 0.12885,
    "h": 264.6
  },
  "luminance": 0.04005
}

Semantic roles & 50–950 ramp

primary

#17337C

secondary

#B1913E

accent

#BB3CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17337C

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

Preview Lab → · Contrast checker → · Palette generator →