#2A40B3#2A40B3

#2A40B3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.183 H 268.8°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#2A40B3
RGB	rgb(42, 64, 179)
HSL	hsl(230, 62%, 43%)
HSV	hsv(230, 77%, 70%)
CMYK	cmyk(76.5%, 64.2%, 0%, 29.8%)
CIE-LAB	lab(32.73, 33.05, -63.28)
CIE-LCH	lch(32.73, 71.39, 297.58°)
OKLab	oklab(43.31% -0.004 -0.183)
OKLCH	oklch(43.31% 0.183 268.8)
XYZ	xyz(10.9221, 7.4125, 43.4942)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A40B3 #B39D2A

analogous

#2A84B3 #2A40B3 #582AB3

triadic

#2A40B3 #B32A40 #40B32A

tetradic

#2A40B3 #B32A84 #B39D2A #2AB358

square

#2A40B3 #B32A84 #B39D2A #2AB358

split-complementary

#2A40B3 #B3582A #84B32A

monochromatic

#131D50 #1E2E81 #2A40B3 #465DD4 #7889DF

Accessibility & contrast

On white

8.46

#2A40B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#2A40B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A40B3

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A40B3	#FFFFFF	#000000	##FFFFFF
##2A40B3	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2a40b3;
/* rgb */ color: rgb(42, 64, 179);
/* oklch */ color: oklch(43.3% 0.183 268.8);

Tailwind

colors: {
  custom: {
    50: '#7974cb',
    500: '#2a40b3',
    950: '#000000',
  },
}

SCSS

$custom: #2a40b3;
$custom-light: #7974cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2a40b3",
  "rgb": {
    "r": 42,
    "g": 64,
    "b": 179
  },
  "hsl": {
    "h": 230.365,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43306,
    "c": 0.18306,
    "h": 268.8
  },
  "luminance": 0.07414
}

Semantic roles & 50–950 ramp

primary

#2A40B3

secondary

#C7B972

accent

#CB43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2A40B3

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

Preview Lab → · Contrast checker → · Palette generator →