#3A40AC#3A40AC

#3A40AC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.169 H 274.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#3A40AC
RGB	rgb(58, 64, 172)
HSL	hsl(237, 50%, 45%)
HSV	hsv(237, 66%, 67%)
CMYK	cmyk(66.3%, 62.8%, 0%, 32.5%)
CIE-LAB	lab(33.01, 32.56, -58.61)
CIE-LCH	lch(33.01, 67.05, 299.05°)
OKLab	oklab(43.57% 0.0132 -0.1689)
OKLCH	oklch(43.57% 0.169 274.5)
XYZ	xyz(11.0223, 7.5439, 39.8970)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A40AC #ACA63A

analogous

#3A79AC #3A40AC #6D3AAC

triadic

#3A40AC #AC3A40 #40AC3A

tetradic

#3A40AC #AC3A79 #ACA63A #3AAC6D

square

#3A40AC #AC3A79 #ACA63A #3AAC6D

split-complementary

#3A40AC #AC6D3A #79AC3A

monochromatic

#1B1E50 #2B2F7E #3A40AC #5B61C8 #898DD7

Accessibility & contrast

On white

8.37

#3A40AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3A40AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40AC

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40AC	#FFFFFF	#000000	##FFFFFF
##3A40AC	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AF

Deuteranopia (green-blind)

#0049AA

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3a40ac;
/* rgb */ color: rgb(58, 64, 172);
/* oklch */ color: oklch(43.6% 0.169 274.5);

Tailwind

colors: {
  custom: {
    50: '#7e75c6',
    500: '#3a40ac',
    950: '#000000',
  },
}

SCSS

$custom: #3a40ac;
$custom-light: #7e75c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40ac",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 172
  },
  "hsl": {
    "h": 236.842,
    "s": 49.565,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43569,
    "c": 0.16946,
    "h": 274.5
  },
  "luminance": 0.07545
}

Semantic roles & 50–950 ramp

primary

#3A40AC

secondary

#C2BE80

accent

#D24FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3A40AC

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

Preview Lab → · Contrast checker → · Palette generator →