#2A40B6#2A40B6

#2A40B6 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.187 H 268.7°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#2A40B6
RGB	rgb(42, 64, 182)
HSL	hsl(231, 63%, 44%)
HSV	hsv(231, 77%, 71%)
CMYK	cmyk(76.9%, 64.8%, 0%, 28.6%)
CIE-LAB	lab(33.00, 34.15, -64.62)
CIE-LCH	lch(33.00, 73.09, 297.86°)
OKLab	oklab(43.58% -0.0041 -0.1869)
OKLCH	oklch(43.58% 0.187 268.7)
XYZ	xyz(11.2288, 7.5352, 45.1095)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A40B6 #B6A02A

analogous

#2A86B6 #2A40B6 #5A2AB6

triadic

#2A40B6 #B62A40 #40B62A

tetradic

#2A40B6 #B62A86 #B6A02A #2AB65A

square

#2A40B6 #B62A86 #B6A02A #2AB65A

split-complementary

#2A40B6 #B65A2A #86B62A

monochromatic

#131D53 #1F2F84 #2A40B6 #485ED5 #7A8AE0

Accessibility & contrast

On white

8.38

#2A40B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#2A40B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A40B6

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A40B6	#FFFFFF	#000000	##FFFFFF
##2A40B6	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#0047B4

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2a40b6;
/* rgb */ color: rgb(42, 64, 182);
/* oklch */ color: oklch(43.6% 0.187 268.7);

Tailwind

colors: {
  custom: {
    50: '#7a74cd',
    500: '#2a40b6',
    950: '#000000',
  },
}

SCSS

$custom: #2a40b6;
$custom-light: #7a74cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2a40b6",
  "rgb": {
    "r": 42,
    "g": 64,
    "b": 182
  },
  "hsl": {
    "h": 230.571,
    "s": 62.5,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43584,
    "c": 0.18699,
    "h": 268.7
  },
  "luminance": 0.07536
}

Semantic roles & 50–950 ramp

primary

#2A40B6

secondary

#C8BB73

accent

#CC42E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2A40B6

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

Preview Lab → · Contrast checker → · Palette generator →