#2A42B8#2A42B8

#2A42B8 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.187 H 268.4°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#2A42B8
RGB	rgb(42, 66, 184)
HSL	hsl(230, 63%, 44%)
HSV	hsv(230, 77%, 72%)
CMYK	cmyk(77.2%, 64.1%, 0%, 27.8%)
CIE-LAB	lab(33.66, 33.60, -64.71)
CIE-LCH	lch(33.66, 72.91, 297.44°)
OKLab	oklab(44.13% -0.0053 -0.1872)
OKLCH	oklch(44.13% 0.187 268.4)
XYZ	xyz(11.5518, 7.8481, 46.2441)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.19

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A42B8 #B8A02A

analogous

#2A89B8 #2A42B8 #592AB8

triadic

#2A42B8 #B82A42 #42B82A

tetradic

#2A42B8 #B82A89 #B8A02A #2AB859

square

#2A42B8 #B82A89 #B8A02A #2AB859

split-complementary

#2A42B8 #B8592A #89B82A

monochromatic

#131E54 #1F3086 #2A42B8 #4A61D6 #7B8DE1

Accessibility & contrast

On white

8.17

#2A42B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#2A42B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A42B8

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A42B8	#FFFFFF	#000000	##FFFFFF
##2A42B8	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2a42b8;
/* rgb */ color: rgb(42, 66, 184);
/* oklch */ color: oklch(44.1% 0.187 268.4);

Tailwind

colors: {
  custom: {
    50: '#7a76ce',
    500: '#2a42b8',
    950: '#000000',
  },
}

SCSS

$custom: #2a42b8;
$custom-light: #7a76ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2a42b8",
  "rgb": {
    "r": 42,
    "g": 66,
    "b": 184
  },
  "hsl": {
    "h": 229.859,
    "s": 62.832,
    "l": 44.314
  },
  "oklch": {
    "l": 0.44131,
    "c": 0.18726,
    "h": 268.4
  },
  "luminance": 0.07849
}

Semantic roles & 50–950 ramp

primary

#2A42B8

secondary

#C9BB75

accent

#CA42E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2A42B8

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

Preview Lab → · Contrast checker → · Palette generator →