#17397E#17397E

#17397E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.124 H 262.3°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#17397E
RGB	rgb(23, 57, 126)
HSL	hsl(220, 69%, 29%)
HSV	hsv(220, 82%, 49%)
CMYK	cmyk(81.7%, 54.8%, 0%, 50.6%)
CIE-LAB	lab(25.61, 15.00, -42.58)
CIE-LCH	lch(25.61, 45.15, 289.41°)
OKLab	oklab(36.39% -0.0165 -0.1227)
OKLCH	oklch(36.39% 0.124 262.3)
XYZ	xyz(5.5810, 4.6141, 20.3311)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17397E #7E5C17

analogous

#176D7E #17397E #28177E

triadic

#17397E #7E1739 #397E17

tetradic

#17397E #7E176D #7E5C17 #177E28

square

#17397E #7E176D #7E5C17 #177E28

split-complementary

#17397E #7E2817 #6D7E17

monochromatic

#050C1A #0E224A #17397E #2050B2 #356CDA

Accessibility & contrast

On white

10.92

#17397E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#17397E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17397E

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17397E	#FFFFFF	#000000	##FFFFFF
##17397E	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054280

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #17397e;
/* rgb */ color: rgb(23, 57, 126);
/* oklch */ color: oklch(36.4% 0.124 262.3);

Tailwind

colors: {
  custom: {
    50: '#666ea4',
    500: '#17397e',
    950: '#000000',
  },
}

SCSS

$custom: #17397e;
$custom-light: #666ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#17397e",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 126
  },
  "hsl": {
    "h": 220.194,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36385,
    "c": 0.12381,
    "h": 262.3
  },
  "luminance": 0.04615
}

Semantic roles & 50–950 ramp

primary

#17397E

secondary

#B38C3E

accent

#B23CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #17397E

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

Preview Lab → · Contrast checker → · Palette generator →