#173D71#173D71

#173D71 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.3% C 0.100 H 257.2°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#173D71
RGB	rgb(23, 61, 113)
HSL	hsl(215, 66%, 27%)
HSV	hsv(215, 80%, 44%)
CMYK	cmyk(79.6%, 46%, 0%, 55.7%)
CIE-LAB	lab(25.90, 6.78, -33.89)
CIE-LCH	lch(25.90, 34.56, 281.32°)
OKLab	oklab(36.31% -0.0221 -0.097)
OKLCH	oklch(36.31% 0.1 257.2)
XYZ	xyz(5.0016, 4.7113, 16.2654)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D71 #714B17

analogous

#176A71 #173D71 #1E1771

triadic

#173D71 #71173D #3D7117

tetradic

#173D71 #71176A #714B17 #17711E

square

#173D71 #71176A #714B17 #17711E

split-complementary

#173D71 #711E17 #6A7117

monochromatic

#050E19 #0D223E #173D71 #2158A4 #2E74D4

Accessibility & contrast

On white

10.81

#173D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#173D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D71

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D71	#FFFFFF	#000000	##FFFFFF
##173D71	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234273

Deuteranopia (green-blind)

#113A70

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173d71;
/* rgb */ color: rgb(23, 61, 113);
/* oklch */ color: oklch(36.3% 0.100 257.2);

Tailwind

colors: {
  custom: {
    50: '#63729a',
    500: '#173d71',
    950: '#000000',
  },
}

SCSS

$custom: #173d71;
$custom-light: #63729a;
$custom-dark: #000000;

JSON

{
  "hex": "#173d71",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 214.667,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.36308,
    "c": 0.09953,
    "h": 257.2
  },
  "luminance": 0.04712
}

Semantic roles & 50–950 ramp

primary

#173D71

secondary

#A77A3D

accent

#A13FE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173D71

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

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