#173A6E#173A6E

#173A6E is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.099 H 258.4°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#173A6E
RGB	rgb(23, 58, 110)
HSL	hsl(216, 65%, 26%)
HSV	hsv(216, 79%, 43%)
CMYK	cmyk(79.1%, 47.3%, 0%, 56.9%)
CIE-LAB	lab(24.74, 7.64, -33.82)
CIE-LCH	lch(24.74, 34.67, 282.73°)
OKLab	oklab(35.35% -0.0199 -0.0969)
OKLCH	oklch(35.35% 0.099 258.4)
XYZ	xyz(4.6799, 4.3335, 15.3386)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A6E #6E4B17

analogous

#17656E #173A6E #1F176E

triadic

#173A6E #6E173A #3A6E17

tetradic

#173A6E #6E1765 #6E4B17 #176E1F

square

#173A6E #6E1765 #6E4B17 #176E1F

split-complementary

#173A6E #6E1F17 #656E17

monochromatic

#050D19 #0C1F3B #173A6E #2255A1 #2C6FD3

Accessibility & contrast

On white

11.25

#173A6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#173A6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A6E

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A6E	#FFFFFF	#000000	##FFFFFF
##173A6E	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3F70

Deuteranopia (green-blind)

#0D376D

Tritanopia (blue-blind)

#00464E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173a6e;
/* rgb */ color: rgb(23, 58, 110);
/* oklch */ color: oklch(35.4% 0.099 258.4);

Tailwind

colors: {
  custom: {
    50: '#626f98',
    500: '#173a6e',
    950: '#000000',
  },
}

SCSS

$custom: #173a6e;
$custom-light: #626f98;
$custom-dark: #000000;

JSON

{
  "hex": "#173a6e",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 110
  },
  "hsl": {
    "h": 215.862,
    "s": 65.414,
    "l": 26.078
  },
  "oklch": {
    "l": 0.35353,
    "c": 0.09892,
    "h": 258.4
  },
  "luminance": 0.04334
}

Semantic roles & 50–950 ramp

primary

#173A6E

secondary

#A47A3D

accent

#A43FE8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #173A6E

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

Preview Lab → · Contrast checker → · Palette generator →