#17397C#17397C

#17397C is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.2% C 0.121 H 262.1°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#17397C
RGB	rgb(23, 57, 124)
HSL	hsl(220, 69%, 29%)
HSV	hsv(220, 81%, 49%)
CMYK	cmyk(81.5%, 54%, 0%, 51.4%)
CIE-LAB	lab(25.45, 14.18, -41.57)
CIE-LCH	lch(25.45, 43.92, 288.83°)
OKLab	oklab(36.22% -0.0167 -0.1197)
OKLCH	oklch(36.22% 0.121 262.1)
XYZ	xyz(5.4533, 4.5630, 19.6582)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17397C #7C5A17

analogous

#176C7C #17397C #28177C

triadic

#17397C #7C1739 #397C17

tetradic

#17397C #7C176C #7C5A17 #177C28

square

#17397C #7C176C #7C5A17 #177C28

split-complementary

#17397C #7C2817 #6C7C17

monochromatic

#050C1A #0D2148 #17397C #2151B0 #346CD9

Accessibility & contrast

On white

10.98

#17397C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#17397C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17397C

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17397C	#FFFFFF	#000000	##FFFFFF
##17397C	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A417E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #17397c;
/* rgb */ color: rgb(23, 57, 124);
/* oklch */ color: oklch(36.2% 0.121 262.1);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#17397c',
    950: '#000000',
  },
}

SCSS

$custom: #17397c;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#17397c",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 124
  },
  "hsl": {
    "h": 219.802,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36219,
    "c": 0.1209,
    "h": 262.1
  },
  "luminance": 0.04564
}

Semantic roles & 50–950 ramp

primary

#17397C

secondary

#B18A3E

accent

#B13CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #17397C

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

Preview Lab → · Contrast checker → · Palette generator →