#1813B4#1813B4

#1813B4 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.6% C 0.229 H 268.0°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#1813B4
RGB	rgb(24, 19, 180)
HSL	hsl(242, 81%, 39%)
HSV	hsv(242, 89%, 71%)
CMYK	cmyk(86.7%, 89.4%, 0%, 29.4%)
CIE-LAB	lab(23.52, 56.24, -79.13)
CIE-LCH	lch(23.52, 97.08, 305.40°)
OKLab	oklab(36.57% -0.0078 -0.2289)
OKLCH	oklch(36.57% 0.229 268)
XYZ	xyz(8.8450, 3.9541, 43.4682)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1813B4 #AFB413

analogous

#135FB4 #1813B4 #6913B4

triadic

#1813B4 #B41813 #13B418

tetradic

#1813B4 #B4135F #AFB413 #13B469

square

#1813B4 #B4135F #AFB413 #13B469

split-complementary

#1813B4 #B46913 #5FB413

monochromatic

#090745 #110D7D #1813B4 #231DE7 #5954ED

Accessibility & contrast

On white

11.73

#1813B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1813B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1813B4

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1813B4	#FFFFFF	#000000	##FFFFFF
##1813B4	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040B8

Deuteranopia (green-blind)

#002FB1

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1813b4;
/* rgb */ color: rgb(24, 19, 180);
/* oklch */ color: oklch(36.6% 0.229 268.0);

Tailwind

colors: {
  custom: {
    50: '#7959cc',
    500: '#1813b4',
    950: '#000000',
  },
}

SCSS

$custom: #1813b4;
$custom-light: #7959cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1813b4",
  "rgb": {
    "r": 24,
    "g": 19,
    "b": 180
  },
  "hsl": {
    "h": 241.863,
    "s": 80.905,
    "l": 39.02
  },
  "oklch": {
    "l": 0.36574,
    "c": 0.22901,
    "h": 268
  },
  "luminance": 0.03955
}

Semantic roles & 50–950 ramp

primary

#1813B4

secondary

#CCCF53

accent

#F730F1

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1813B4

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

Preview Lab → · Contrast checker → · Palette generator →