#173E76#173E76

#173E76 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.106 H 258.0°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#173E76
RGB	rgb(23, 62, 118)
HSL	hsl(215, 67%, 28%)
HSV	hsv(215, 81%, 46%)
CMYK	cmyk(80.5%, 47.5%, 0%, 53.7%)
CIE-LAB	lab(26.55, 8.16, -36.01)
CIE-LCH	lch(26.55, 36.93, 282.77°)
OKLab	oklab(36.92% -0.022 -0.1033)
OKLCH	oklch(36.92% 0.106 258)
XYZ	xyz(5.3448, 4.9348, 17.8068)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E76 #764F17

analogous

#176E76 #173E76 #1F1776

triadic

#173E76 #76173E #3E7617

tetradic

#173E76 #76176E #764F17 #17761F

square

#173E76 #76176E #764F17 #17761F

split-complementary

#173E76 #761F17 #6E7617

monochromatic

#050D1A #0D2343 #173E76 #2159A9 #3175D7

Accessibility & contrast

On white

10.57

#173E76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#173E76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E76

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E76	#FFFFFF	#000000	##FFFFFF
##173E76	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214378

Deuteranopia (green-blind)

#0B3B75

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #173e76;
/* rgb */ color: rgb(23, 62, 118);
/* oklch */ color: oklch(36.9% 0.106 258.0);

Tailwind

colors: {
  custom: {
    50: '#64729e',
    500: '#173e76',
    950: '#000000',
  },
}

SCSS

$custom: #173e76;
$custom-light: #64729e;
$custom-dark: #000000;

JSON

{
  "hex": "#173e76",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 118
  },
  "hsl": {
    "h": 215.368,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36921,
    "c": 0.1056,
    "h": 258
  },
  "luminance": 0.04935
}

Semantic roles & 50–950 ramp

primary

#173E76

secondary

#AB7E3E

accent

#A33EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173E76

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

Preview Lab → · Contrast checker → · Palette generator →