#172B61#172B61

#172B61 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.7% C 0.099 H 265.6°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#172B61
RGB	rgb(23, 43, 97)
HSL	hsl(224, 62%, 24%)
HSV	hsv(224, 76%, 38%)
CMYK	cmyk(76.3%, 55.7%, 0%, 62%)
CIE-LAB	lab(19.11, 12.99, -34.45)
CIE-LCH	lch(19.11, 36.82, 290.66°)
OKLab	oklab(30.73% -0.0077 -0.0991)
OKLCH	oklch(30.73% 0.099 265.6)
XYZ	xyz(3.3741, 2.7726, 11.6643)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B61 #614D17

analogous

#175061 #172B61 #281761

triadic

#172B61 #61172B #2B6117

tetradic

#172B61 #611750 #614D17 #176128

square

#172B61 #611750 #614D17 #176128

split-complementary

#172B61 #612817 #506117

monochromatic

#060B19 #0B1530 #172B61 #234192 #2E57C4

Accessibility & contrast

On white

13.51

#172B61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172B61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B61

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B61	#FFFFFF	#000000	##FFFFFF
##172B61	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#073263

Deuteranopia (green-blind)

#002B60

Tritanopia (blue-blind)

#003841

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172b61;
/* rgb */ color: rgb(23, 43, 97);
/* oklch */ color: oklch(30.7% 0.099 265.6);

Tailwind

colors: {
  custom: {
    50: '#5f638e',
    500: '#172b61',
    950: '#000000',
  },
}

SCSS

$custom: #172b61;
$custom-light: #5f638e;
$custom-dark: #000000;

JSON

{
  "hex": "#172b61",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 97
  },
  "hsl": {
    "h": 223.784,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.30733,
    "c": 0.09938,
    "h": 265.6
  },
  "luminance": 0.02773
}

Semantic roles & 50–950 ramp

primary

#172B61

secondary

#987F3C

accent

#B943E5

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172B61

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

Preview Lab → · Contrast checker → · Palette generator →