#17377F#17377F

#17377F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.128 H 263.3°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#17377F
RGB	rgb(23, 55, 127)
HSL	hsl(222, 69%, 29%)
HSV	hsv(222, 82%, 50%)
CMYK	cmyk(81.9%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(25.09, 16.83, -44.04)
CIE-LCH	lch(25.09, 47.14, 290.92°)
OKLab	oklab(36.02% -0.0149 -0.127)
OKLCH	oklch(36.02% 0.128 263.3)
XYZ	xyz(5.5489, 4.4462, 20.6403)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17377F #7F5F17

analogous

#176B7F #17377F #2B177F

triadic

#17377F #7F1737 #377F17

tetradic

#17377F #7F176B #7F5F17 #177F2B

square

#17377F #7F176B #7F5F17 #177F2B

split-complementary

#17377F #7F2B17 #6B7F17

monochromatic

#050B1A #0E214B #17377F #204DB3 #3669DB

Accessibility & contrast

On white

11.11

#17377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#17377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17377F

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17377F	#FFFFFF	#000000	##FFFFFF
##17377F	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004182

Deuteranopia (green-blind)

#00377E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #17377f;
/* rgb */ color: rgb(23, 55, 127);
/* oklch */ color: oklch(36.0% 0.128 263.3);

Tailwind

colors: {
  custom: {
    50: '#666da5',
    500: '#17377f',
    950: '#000000',
  },
}

SCSS

$custom: #17377f;
$custom-light: #666da5;
$custom-dark: #000000;

JSON

{
  "hex": "#17377f",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 221.538,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36023,
    "c": 0.12791,
    "h": 263.3
  },
  "luminance": 0.04447
}

Semantic roles & 50–950 ramp

primary

#17377F

secondary

#B48F3E

accent

#B63CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #17377F

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

Preview Lab → · Contrast checker → · Palette generator →