#173E7E#173E7E

#173E7E is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.117 H 259.9°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#173E7E
RGB	rgb(23, 62, 126)
HSL	hsl(217, 69%, 29%)
HSV	hsv(217, 82%, 49%)
CMYK	cmyk(81.7%, 50.8%, 0%, 50.6%)
CIE-LAB	lab(27.11, 11.48, -40.15)
CIE-LCH	lch(27.11, 41.76, 285.96°)
OKLab	oklab(37.53% -0.0205 -0.1154)
OKLCH	oklch(37.53% 0.117 259.9)
XYZ	xyz(5.8405, 5.1331, 20.4176)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E7E #7E5717

analogous

#17727E #173E7E #24177E

triadic

#173E7E #7E173E #3E7E17

tetradic

#173E7E #7E1772 #7E5717 #177E24

square

#173E7E #7E1772 #7E5717 #177E24

split-complementary

#173E7E #7E2417 #727E17

monochromatic

#050D1A #0E254A #173E7E #2057B2 #3574DA

Accessibility & contrast

On white

10.36

#173E7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#173E7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E7E

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E7E	#FFFFFF	#000000	##FFFFFF
##173E7E	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184580

Deuteranopia (green-blind)

#003C7D

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #173e7e;
/* rgb */ color: rgb(23, 62, 126);
/* oklch */ color: oklch(37.5% 0.117 259.9);

Tailwind

colors: {
  custom: {
    50: '#6672a4',
    500: '#173e7e',
    950: '#000000',
  },
}

SCSS

$custom: #173e7e;
$custom-light: #6672a4;
$custom-dark: #000000;

JSON

{
  "hex": "#173e7e",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 126
  },
  "hsl": {
    "h": 217.282,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37534,
    "c": 0.11726,
    "h": 259.9
  },
  "luminance": 0.05134
}

Semantic roles & 50–950 ramp

primary

#173E7E

secondary

#B3873E

accent

#A93CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #173E7E

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

Preview Lab → · Contrast checker → · Palette generator →