#17397D#17397D

#17397D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.3% C 0.122 H 262.2°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#17397D
RGB	rgb(23, 57, 125)
HSL	hsl(220, 69%, 29%)
HSV	hsv(220, 82%, 49%)
CMYK	cmyk(81.6%, 54.4%, 0%, 51%)
CIE-LAB	lab(25.53, 14.59, -42.08)
CIE-LCH	lch(25.53, 44.53, 289.12°)
OKLab	oklab(36.3% -0.0166 -0.1212)
OKLCH	oklch(36.3% 0.122 262.2)
XYZ	xyz(5.5168, 4.5884, 19.9930)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17397D #7D5B17

analogous

#176C7D #17397D #28177D

triadic

#17397D #7D1739 #397D17

tetradic

#17397D #7D176C #7D5B17 #177D28

square

#17397D #7D176C #7D5B17 #177D28

split-complementary

#17397D #7D2817 #6C7D17

monochromatic

#050C1A #0D2149 #17397D #2151B1 #356CDA

Accessibility & contrast

On white

10.95

#17397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#17397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17397D

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17397D	#FFFFFF	#000000	##FFFFFF
##17397D	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08417F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #17397d;
/* rgb */ color: rgb(23, 57, 125);
/* oklch */ color: oklch(36.3% 0.122 262.2);

Tailwind

colors: {
  custom: {
    50: '#666ea3',
    500: '#17397d',
    950: '#000000',
  },
}

SCSS

$custom: #17397d;
$custom-light: #666ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#17397d",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 220,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36302,
    "c": 0.12236,
    "h": 262.2
  },
  "luminance": 0.04589
}

Semantic roles & 50–950 ramp

primary

#17397D

secondary

#B28B3E

accent

#B13CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #17397D

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

Preview Lab → · Contrast checker → · Palette generator →