#2B18B4#2B18B4

#2B18B4 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 38.0% C 0.221 H 273.5°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#2B18B4
RGB	rgb(43, 24, 180)
HSL	hsl(247, 76%, 40%)
HSV	hsv(247, 87%, 71%)
CMYK	cmyk(76.1%, 86.7%, 0%, 29.4%)
CIE-LAB	lab(25.14, 55.19, -76.40)
CIE-LCH	lch(25.14, 94.25, 305.84°)
OKLab	oklab(37.96% 0.0134 -0.2209)
OKLCH	oklch(37.96% 0.221 273.5)
XYZ	xyz(9.5584, 4.4611, 43.5285)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B18B4 #A1B418

analogous

#1853B4 #2B18B4 #7918B4

triadic

#2B18B4 #B42B18 #18B42B

tetradic

#2B18B4 #B41853 #A1B418 #18B479

square

#2B18B4 #B41853 #A1B418 #18B479

split-complementary

#2B18B4 #B47918 #53B418

monochromatic

#110A48 #1E117E #2B18B4 #3E27E2 #6E5DE9

Accessibility & contrast

On white

11.10

#2B18B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#2B18B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B18B4

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B18B4	#FFFFFF	#000000	##FFFFFF
##2B18B4	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0034B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b18b4;
/* rgb */ color: rgb(43, 24, 180);
/* oklch */ color: oklch(38.0% 0.221 273.5);

Tailwind

colors: {
  custom: {
    50: '#7d5dcc',
    500: '#2b18b4',
    950: '#000000',
  },
}

SCSS

$custom: #2b18b4;
$custom-light: #7d5dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b18b4",
  "rgb": {
    "r": 43,
    "g": 24,
    "b": 180
  },
  "hsl": {
    "h": 247.308,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.37956,
    "c": 0.22126,
    "h": 273.5
  },
  "luminance": 0.04462
}

Semantic roles & 50–950 ramp

primary

#2B18B4

secondary

#BFCD5B

accent

#F335DC

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2B18B4

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

Preview Lab → · Contrast checker → · Palette generator →