#2A40B8#2A40B8

#2A40B8 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.190 H 268.7°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#2A40B8
RGB	rgb(42, 64, 184)
HSL	hsl(231, 63%, 44%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(77.2%, 65.2%, 0%, 27.8%)
CIE-LAB	lab(33.18, 34.89, -65.51)
CIE-LCH	lch(33.18, 74.22, 298.04°)
OKLab	oklab(43.77% -0.0042 -0.1895)
OKLCH	oklch(43.77% 0.19 268.7)
XYZ	xyz(11.4370, 7.6184, 46.2058)
Luminance	0.0762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.91

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A40B8 #B8A22A

analogous

#2A87B8 #2A40B8 #5B2AB8

triadic

#2A40B8 #B82A40 #40B82A

tetradic

#2A40B8 #B82A87 #B8A22A #2AB85B

square

#2A40B8 #B82A87 #B8A22A #2AB85B

split-complementary

#2A40B8 #B85B2A #87B82A

monochromatic

#131D54 #1F2F86 #2A40B8 #4A5FD6 #7B8BE1

Accessibility & contrast

On white

8.32

#2A40B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#2A40B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A40B8

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A40B8	#FFFFFF	#000000	##FFFFFF
##2A40B8	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#006076

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2a40b8;
/* rgb */ color: rgb(42, 64, 184);
/* oklch */ color: oklch(43.8% 0.190 268.7);

Tailwind

colors: {
  custom: {
    50: '#7a75ce',
    500: '#2a40b8',
    950: '#000000',
  },
}

SCSS

$custom: #2a40b8;
$custom-light: #7a75ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2a40b8",
  "rgb": {
    "r": 42,
    "g": 64,
    "b": 184
  },
  "hsl": {
    "h": 230.704,
    "s": 62.832,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43771,
    "c": 0.1896,
    "h": 268.7
  },
  "luminance": 0.0762
}

Semantic roles & 50–950 ramp

primary

#2A40B8

secondary

#C9BC75

accent

#CC42E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2A40B8

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

Preview Lab → · Contrast checker → · Palette generator →