#1817A0#1817A0

#1817A0 is a dark, highly saturated blue. Relative luminance 0.033; OKLCH L 34.4% C 0.204 H 268.9°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#1817A0
RGB	rgb(24, 23, 160)
HSL	hsl(240, 75%, 36%)
HSV	hsv(240, 86%, 63%)
CMYK	cmyk(85%, 85.6%, 0%, 37.3%)
CIE-LAB	lab(21.37, 48.75, -70.62)
CIE-LCH	lch(21.37, 85.81, 304.62°)
OKLab	oklab(34.36% -0.0039 -0.2044)
OKLCH	oklch(34.36% 0.204 268.9)
XYZ	xyz(7.0261, 3.3442, 33.5261)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1817A0 #9FA017

analogous

#175AA0 #1817A0 #5C17A0

triadic

#1817A0 #A01817 #17A018

tetradic

#1817A0 #A0175A #9FA017 #17A05C

square

#1817A0 #A0175A #9FA017 #17A05C

split-complementary

#1817A0 #A05C17 #5AA017

monochromatic

#080835 #100F6A #1817A0 #201FD6 #4D4CE5

Accessibility & contrast

On white

12.58

#1817A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1817A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1817A0

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1817A0	#FFFFFF	#000000	##FFFFFF
##1817A0	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA4

Deuteranopia (green-blind)

#002C9E

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1817a0;
/* rgb */ color: rgb(24, 23, 160);
/* oklch */ color: oklch(34.4% 0.204 268.9);

Tailwind

colors: {
  custom: {
    50: '#7359be',
    500: '#1817a0',
    950: '#000000',
  },
}

SCSS

$custom: #1817a0;
$custom-light: #7359be;
$custom-dark: #000000;

JSON

{
  "hex": "#1817a0",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 160
  },
  "hsl": {
    "h": 240.438,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34359,
    "c": 0.20445,
    "h": 268.9
  },
  "luminance": 0.03345
}

Semantic roles & 50–950 ramp

primary

#1817A0

secondary

#C6C74C

accent

#F136F0

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1817A0

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

Preview Lab → · Contrast checker → · Palette generator →