#4045B7#4045B7

#4045B7 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.8% C 0.177 H 275.0°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#4045B7
RGB	rgb(64, 69, 183)
HSL	hsl(237, 48%, 48%)
HSV	hsv(237, 65%, 72%)
CMYK	cmyk(65%, 62.3%, 0%, 28.2%)
CIE-LAB	lab(35.53, 34.11, -61.02)
CIE-LCH	lch(35.53, 69.91, 299.20°)
OKLab	oklab(45.8% 0.0155 -0.1758)
OKLCH	oklch(45.8% 0.177 275)
XYZ	xyz(12.7869, 8.7640, 45.8083)
Luminance	0.0877 (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

#4045B7 #B7B240

analogous

#4080B7 #4045B7 #7640B7

triadic

#4045B7 #B74045 #45B740

tetradic

#4045B7 #B74080 #B7B240 #40B776

square

#4045B7 #B74080 #B7B240 #40B776

split-complementary

#4045B7 #B77640 #80B740

monochromatic

#20235C #30348A #4045B7 #696ECB #979ADB

Accessibility & contrast

On white

7.63

#4045B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#4045B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4045B7

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4045B7	#FFFFFF	#000000	##FFFFFF
##4045B7	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BB

Deuteranopia (green-blind)

#004EB5

Tritanopia (blue-blind)

#006277

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4045b7;
/* rgb */ color: rgb(64, 69, 183);
/* oklch */ color: oklch(45.8% 0.177 275.0);

Tailwind

colors: {
  custom: {
    50: '#8379cd',
    500: '#4045b7',
    950: '#000000',
  },
}

SCSS

$custom: #4045b7;
$custom-light: #8379cd;
$custom-dark: #000000;

JSON

{
  "hex": "#4045b7",
  "rgb": {
    "r": 64,
    "g": 69,
    "b": 183
  },
  "hsl": {
    "h": 237.479,
    "s": 48.178,
    "l": 48.431
  },
  "oklch": {
    "l": 0.45799,
    "c": 0.17653,
    "h": 275
  },
  "luminance": 0.08765
}

Semantic roles & 50–950 ramp

primary

#4045B7

secondary

#C6C48D

accent

#D250D8

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #4045B7

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

Preview Lab → · Contrast checker → · Palette generator →