#2818B4#2818B4

#2818B4 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.8% C 0.222 H 272.4°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#2818B4
RGB	rgb(40, 24, 180)
HSL	hsl(246, 76%, 40%)
HSV	hsv(246, 87%, 71%)
CMYK	cmyk(77.8%, 86.7%, 0%, 29.4%)
CIE-LAB	lab(24.95, 55.03, -76.73)
CIE-LCH	lch(24.95, 94.42, 305.65°)
OKLab	oklab(37.77% 0.0095 -0.2219)
OKLCH	oklch(37.77% 0.222 272.4)
XYZ	xyz(9.4372, 4.3986, 43.5228)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2818B4 #A4B418

analogous

#1856B4 #2818B4 #7618B4

triadic

#2818B4 #B42818 #18B428

tetradic

#2818B4 #B41856 #A4B418 #18B476

square

#2818B4 #B41856 #A4B418 #18B476

split-complementary

#2818B4 #B47618 #56B418

monochromatic

#100A48 #1C117E #2818B4 #3A27E2 #6B5DE9

Accessibility & contrast

On white

11.17

#2818B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#2818B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2818B4

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2818B4	#FFFFFF	#000000	##FFFFFF
##2818B4	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0034B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2818b4;
/* rgb */ color: rgb(40, 24, 180);
/* oklch */ color: oklch(37.8% 0.222 272.4);

Tailwind

colors: {
  custom: {
    50: '#7c5ccc',
    500: '#2818b4',
    950: '#000000',
  },
}

SCSS

$custom: #2818b4;
$custom-light: #7c5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#2818b4",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 180
  },
  "hsl": {
    "h": 246.154,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.37773,
    "c": 0.22206,
    "h": 272.4
  },
  "luminance": 0.044
}

Semantic roles & 50–950 ramp

primary

#2818B4

secondary

#C1CD5B

accent

#F335E0

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2818B4

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

Preview Lab → · Contrast checker → · Palette generator →