#3040B9#3040B9

#3040B9 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.189 H 270.5°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#3040B9
RGB	rgb(48, 64, 185)
HSL	hsl(233, 59%, 46%)
HSV	hsv(233, 74%, 73%)
CMYK	cmyk(74.1%, 65.4%, 0%, 27.5%)
CIE-LAB	lab(33.56, 35.87, -65.46)
CIE-LCH	lch(33.56, 74.65, 298.72°)
OKLab	oklab(44.16% 0.0015 -0.1893)
OKLCH	oklch(44.16% 0.189 270.5)
XYZ	xyz(11.8063, 7.7967, 46.7722)
Luminance	0.0780 (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

#3040B9 #B9A930

analogous

#3084B9 #3040B9 #6530B9

triadic

#3040B9 #B93040 #40B930

tetradic

#3040B9 #B93084 #B9A930 #30B965

square

#3040B9 #B93084 #B9A930 #30B965

split-complementary

#3040B9 #B96530 #84B930

monochromatic

#171E58 #232F88 #3040B9 #5462D3 #848FDF

Accessibility & contrast

On white

8.20

#3040B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3040B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3040B9

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3040B9	#FFFFFF	#000000	##FFFFFF
##3040B9	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BD

Deuteranopia (green-blind)

#0049B7

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3040b9;
/* rgb */ color: rgb(48, 64, 185);
/* oklch */ color: oklch(44.2% 0.189 270.5);

Tailwind

colors: {
  custom: {
    50: '#7d75cf',
    500: '#3040b9',
    950: '#000000',
  },
}

SCSS

$custom: #3040b9;
$custom-light: #7d75cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3040b9",
  "rgb": {
    "r": 48,
    "g": 64,
    "b": 185
  },
  "hsl": {
    "h": 232.993,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44157,
    "c": 0.1893,
    "h": 270.5
  },
  "luminance": 0.07798
}

Semantic roles & 50–950 ramp

primary

#3040B9

secondary

#C9C07C

accent

#D046E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3040B9

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

Preview Lab → · Contrast checker → · Palette generator →