#173C76#173C76

#173C76 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.108 H 259.3°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#173C76
RGB	rgb(23, 60, 118)
HSL	hsl(217, 67%, 28%)
HSV	hsv(217, 81%, 46%)
CMYK	cmyk(80.5%, 49.2%, 0%, 53.7%)
CIE-LAB	lab(25.93, 9.56, -37.01)
CIE-LCH	lch(25.93, 38.23, 284.48°)
OKLab	oklab(36.44% -0.0202 -0.1063)
OKLCH	oklch(36.44% 0.108 259.3)
XYZ	xyz(5.2380, 4.7213, 17.7713)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C76 #765117

analogous

#176B76 #173C76 #221776

triadic

#173C76 #76173C #3C7617

tetradic

#173C76 #76176B #765117 #177622

square

#173C76 #76176B #765117 #177622

split-complementary

#173C76 #762217 #6B7617

monochromatic

#050D1A #0D2243 #173C76 #2156A9 #3171D7

Accessibility & contrast

On white

10.80

#173C76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#173C76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C76

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C76	#FFFFFF	#000000	##FFFFFF
##173C76	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4278

Deuteranopia (green-blind)

#023975

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173c76;
/* rgb */ color: rgb(23, 60, 118);
/* oklch */ color: oklch(36.4% 0.108 259.3);

Tailwind

colors: {
  custom: {
    50: '#64719e',
    500: '#173c76',
    950: '#000000',
  },
}

SCSS

$custom: #173c76;
$custom-light: #64719e;
$custom-dark: #000000;

JSON

{
  "hex": "#173c76",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 118
  },
  "hsl": {
    "h": 216.632,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36441,
    "c": 0.10817,
    "h": 259.3
  },
  "luminance": 0.04722
}

Semantic roles & 50–950 ramp

primary

#173C76

secondary

#AB813E

accent

#A73EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173C76

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

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