#173B6D#173B6D

#173B6D is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.5% C 0.096 H 257.4°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#173B6D
RGB	rgb(23, 59, 109)
HSL	hsl(215, 65%, 26%)
HSV	hsv(215, 79%, 43%)
CMYK	cmyk(78.9%, 45.9%, 0%, 57.3%)
CIE-LAB	lab(24.99, 6.52, -32.78)
CIE-LCH	lch(24.99, 33.42, 281.25°)
OKLab	oklab(35.52% -0.021 -0.0938)
OKLCH	oklch(35.52% 0.096 257.4)
XYZ	xyz(4.6766, 4.4137, 15.0705)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B6D #6D4917

analogous

#17666D #173B6D #1E176D

triadic

#173B6D #6D173B #3B6D17

tetradic

#173B6D #6D1766 #6D4917 #176D1E

square

#173B6D #6D1766 #6D4917 #176D1E

split-complementary

#173B6D #6D1E17 #666D17

monochromatic

#050E19 #0C203A #173B6D #2256A0 #2C72D2

Accessibility & contrast

On white

11.15

#173B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B6D

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B6D	#FFFFFF	#000000	##FFFFFF
##173B6D	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22406F

Deuteranopia (green-blind)

#12386C

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173b6d;
/* rgb */ color: rgb(23, 59, 109);
/* oklch */ color: oklch(35.5% 0.096 257.4);

Tailwind

colors: {
  custom: {
    50: '#627097',
    500: '#173b6d',
    950: '#000000',
  },
}

SCSS

$custom: #173b6d;
$custom-light: #627097;
$custom-dark: #000000;

JSON

{
  "hex": "#173b6d",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 109
  },
  "hsl": {
    "h": 214.884,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.35524,
    "c": 0.09616,
    "h": 257.4
  },
  "luminance": 0.04414
}

Semantic roles & 50–950 ramp

primary

#173B6D

secondary

#A3783D

accent

#A240E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #173B6D

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

Preview Lab → · Contrast checker → · Palette generator →