#17397F#17397F

#17397F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.125 H 262.5°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#17397F
RGB	rgb(23, 57, 127)
HSL	hsl(220, 69%, 29%)
HSV	hsv(220, 82%, 50%)
CMYK	cmyk(81.9%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(25.68, 15.42, -43.08)
CIE-LCH	lch(25.68, 45.76, 289.69°)
OKLab	oklab(36.47% -0.0164 -0.1242)
OKLCH	oklch(36.47% 0.125 262.5)
XYZ	xyz(5.6459, 4.6401, 20.6726)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17397F #7F5D17

analogous

#176D7F #17397F #29177F

triadic

#17397F #7F1739 #397F17

tetradic

#17397F #7F176D #7F5D17 #177F29

square

#17397F #7F176D #7F5D17 #177F29

split-complementary

#17397F #7F2917 #6D7F17

monochromatic

#050C1A #0E224B #17397F #2050B3 #366CDB

Accessibility & contrast

On white

10.89

#17397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#17397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17397F

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17397F	#FFFFFF	#000000	##FFFFFF
##17397F	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#034281

Deuteranopia (green-blind)

#00387E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #17397f;
/* rgb */ color: rgb(23, 57, 127);
/* oklch */ color: oklch(36.5% 0.125 262.5);

Tailwind

colors: {
  custom: {
    50: '#666ea5',
    500: '#17397f',
    950: '#000000',
  },
}

SCSS

$custom: #17397f;
$custom-light: #666ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#17397f",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 220.385,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36469,
    "c": 0.12527,
    "h": 262.5
  },
  "luminance": 0.04641
}

Semantic roles & 50–950 ramp

primary

#17397F

secondary

#B48D3E

accent

#B23CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #17397F

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

Preview Lab → · Contrast checker → · Palette generator →