#171B67#171B67

#171B67 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.0% C 0.130 H 272.1°. Best body text is #FFFFFF at 15.12:1 contrast (WCAG AA passes).

Color values

HEX	#171B67
RGB	rgb(23, 27, 103)
HSL	hsl(237, 63%, 25%)
HSV	hsv(237, 78%, 40%)
CMYK	cmyk(77.7%, 73.8%, 0%, 59.6%)
CIE-LAB	lab(15.20, 26.86, -44.79)
CIE-LCH	lch(15.20, 52.23, 300.95°)
OKLab	oklab(28.01% 0.0048 -0.1296)
OKLCH	oklch(28.01% 0.13 272.1)
XYZ	xyz(3.1926, 1.9450, 13.0365)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B67 #676317

analogous

#174367 #171B67 #3B1767

triadic

#171B67 #67171B #1B6717

tetradic

#171B67 #671743 #676317 #17673B

square

#171B67 #671743 #676317 #17673B

split-complementary

#171B67 #673B17 #436717

monochromatic

#060719 #0C0E35 #171B67 #222899 #2D35CB

Accessibility & contrast

On white

15.12

#171B67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#171B67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B67

15.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B67	#FFFFFF	#000000	##FFFFFF
##171B67	1.00	15.12	1.39	15.12
#FFFFFF	15.12	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A69

Deuteranopia (green-blind)

#002266

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171b67;
/* rgb */ color: rgb(23, 27, 103);
/* oklch */ color: oklch(28.0% 0.130 272.1);

Tailwind

colors: {
  custom: {
    50: '#625893',
    500: '#171b67',
    950: '#000000',
  },
}

SCSS

$custom: #171b67;
$custom-light: #625893;
$custom-dark: #000000;

JSON

{
  "hex": "#171b67",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 103
  },
  "hsl": {
    "h": 237,
    "s": 63.492,
    "l": 24.706
  },
  "oklch": {
    "l": 0.28005,
    "c": 0.12966,
    "h": 272.1
  },
  "luminance": 0.01945
}

Semantic roles & 50–950 ramp

primary

#171B67

secondary

#9D983D

accent

#DE41E7

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171B67

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

Preview Lab → · Contrast checker → · Palette generator →