#173E7F#173E7F

#173E7F is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.119 H 260.1°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#173E7F
RGB	rgb(23, 62, 127)
HSL	hsl(218, 69%, 29%)
HSV	hsv(218, 82%, 50%)
CMYK	cmyk(81.9%, 51.2%, 0%, 50.2%)
CIE-LAB	lab(27.18, 11.90, -40.66)
CIE-LCH	lch(27.18, 42.36, 286.31°)
OKLab	oklab(37.61% -0.0204 -0.1169)
OKLCH	oklch(37.61% 0.119 260.1)
XYZ	xyz(5.9053, 5.1590, 20.7591)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E7F #7F5817

analogous

#17727F #173E7F #24177F

triadic

#173E7F #7F173E #3E7F17

tetradic

#173E7F #7F1772 #7F5817 #177F24

square

#173E7F #7F1772 #7F5817 #177F24

split-complementary

#173E7F #7F2417 #727F17

monochromatic

#050D1A #0E254B #173E7F #2057B3 #3674DB

Accessibility & contrast

On white

10.33

#173E7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#173E7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E7F

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E7F	#FFFFFF	#000000	##FFFFFF
##173E7F	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174581

Deuteranopia (green-blind)

#003C7E

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #173e7f;
/* rgb */ color: rgb(23, 62, 127);
/* oklch */ color: oklch(37.6% 0.119 260.1);

Tailwind

colors: {
  custom: {
    50: '#6672a5',
    500: '#173e7f',
    950: '#000000',
  },
}

SCSS

$custom: #173e7f;
$custom-light: #6672a5;
$custom-dark: #000000;

JSON

{
  "hex": "#173e7f",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 127
  },
  "hsl": {
    "h": 217.5,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37613,
    "c": 0.11871,
    "h": 260.1
  },
  "luminance": 0.0516
}

Semantic roles & 50–950 ramp

primary

#173E7F

secondary

#B4883E

accent

#AA3CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #173E7F

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

Preview Lab → · Contrast checker → · Palette generator →