#2A18B4#2A18B4

#2A18B4 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.9% C 0.222 H 273.1°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#2A18B4
RGB	rgb(42, 24, 180)
HSL	hsl(247, 76%, 40%)
HSV	hsv(247, 87%, 71%)
CMYK	cmyk(76.7%, 86.7%, 0%, 29.4%)
CIE-LAB	lab(25.08, 55.13, -76.51)
CIE-LCH	lch(25.08, 94.31, 305.77°)
OKLab	oklab(37.89% 0.012 -0.2212)
OKLCH	oklch(37.89% 0.222 273.1)
XYZ	xyz(9.5170, 4.4398, 43.5266)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A18B4 #A2B418

analogous

#1854B4 #2A18B4 #7818B4

triadic

#2A18B4 #B42A18 #18B42A

tetradic

#2A18B4 #B41854 #A2B418 #18B478

square

#2A18B4 #B41854 #A2B418 #18B478

split-complementary

#2A18B4 #B47818 #54B418

monochromatic

#110A48 #1D117E #2A18B4 #3D27E2 #6D5DE9

Accessibility & contrast

On white

11.12

#2A18B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#2A18B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A18B4

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A18B4	#FFFFFF	#000000	##FFFFFF
##2A18B4	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	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: #2a18b4;
/* rgb */ color: rgb(42, 24, 180);
/* oklch */ color: oklch(37.9% 0.222 273.1);

Tailwind

colors: {
  custom: {
    50: '#7d5ccc',
    500: '#2a18b4',
    950: '#000000',
  },
}

SCSS

$custom: #2a18b4;
$custom-light: #7d5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#2a18b4",
  "rgb": {
    "r": 42,
    "g": 24,
    "b": 180
  },
  "hsl": {
    "h": 246.923,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.37894,
    "c": 0.22153,
    "h": 273.1
  },
  "luminance": 0.04441
}

Semantic roles & 50–950 ramp

primary

#2A18B4

secondary

#C0CD5B

accent

#F335DD

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2A18B4

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

Preview Lab → · Contrast checker → · Palette generator →