#3040B2#3040B2

#3040B2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.180 H 270.6°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#3040B2
RGB	rgb(48, 64, 178)
HSL	hsl(233, 58%, 44%)
HSV	hsv(233, 73%, 70%)
CMYK	cmyk(73%, 64%, 0%, 30.2%)
CIE-LAB	lab(32.94, 33.35, -62.33)
CIE-LCH	lch(32.94, 70.70, 298.15°)
OKLab	oklab(43.51% 0.0019 -0.1801)
OKLCH	oklch(43.51% 0.18 270.6)
XYZ	xyz(11.0855, 7.5084, 42.9759)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3040B2 #B2A230

analogous

#3081B2 #3040B2 #6130B2

triadic

#3040B2 #B23040 #40B230

tetradic

#3040B2 #B23081 #B2A230 #30B261

square

#3040B2 #B23081 #B2A230 #30B261

split-complementary

#3040B2 #B26130 #81B230

monochromatic

#161D52 #232F82 #3040B2 #505FD0 #808BDD

Accessibility & contrast

On white

8.39

#3040B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3040B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3040B2

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3040B2	#FFFFFF	#000000	##FFFFFF
##3040B2	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3040b2;
/* rgb */ color: rgb(48, 64, 178);
/* oklch */ color: oklch(43.5% 0.180 270.6);

Tailwind

colors: {
  custom: {
    50: '#7b75ca',
    500: '#3040b2',
    950: '#000000',
  },
}

SCSS

$custom: #3040b2;
$custom-light: #7b75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3040b2",
  "rgb": {
    "r": 48,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 232.615,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43514,
    "c": 0.18013,
    "h": 270.6
  },
  "luminance": 0.0751
}

Semantic roles & 50–950 ramp

primary

#3040B2

secondary

#C6BC78

accent

#CE47E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3040B2

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

Preview Lab → · Contrast checker → · Palette generator →