#4040BA#4040BA

#4040BA is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.2% C 0.186 H 275.9°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#4040BA
RGB	rgb(64, 64, 186)
HSL	hsl(240, 49%, 49%)
HSV	hsv(240, 66%, 73%)
CMYK	cmyk(65.6%, 65.6%, 0%, 27.1%)
CIE-LAB	lab(34.60, 38.23, -64.30)
CIE-LCH	lch(34.60, 74.81, 300.73°)
OKLab	oklab(45.2% 0.0193 -0.1855)
OKLCH	oklch(45.2% 0.187 275.9)
XYZ	xyz(12.8078, 8.3009, 47.3721)
Luminance	0.0830 (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

#4040BA #BABA40

analogous

#407DBA #4040BA #7D40BA

triadic

#4040BA #BA4040 #40BA40

tetradic

#4040BA #BA407D #BABA40 #40BA7D

square

#4040BA #BA407D #BABA40 #40BA7D

split-complementary

#4040BA #BA7D40 #7DBA40

monochromatic

#21215F #30308C #4040BA #6B6BCC #9999DC

Accessibility & contrast

On white

7.89

#4040BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#4040BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040BA

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040BA	#FFFFFF	#000000	##FFFFFF
##4040BA	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BE

Deuteranopia (green-blind)

#004CB8

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4040ba;
/* rgb */ color: rgb(64, 64, 186);
/* oklch */ color: oklch(45.2% 0.186 275.9);

Tailwind

colors: {
  custom: {
    50: '#8475d0',
    500: '#4040ba',
    950: '#000000',
  },
}

SCSS

$custom: #4040ba;
$custom-light: #8475d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4040ba",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 186
  },
  "hsl": {
    "h": 240,
    "s": 48.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.45201,
    "c": 0.1865,
    "h": 275.9
  },
  "luminance": 0.08302
}

Semantic roles & 50–950 ramp

primary

#4040BA

secondary

#C8C88E

accent

#D84FD8

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4040BA

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

Preview Lab → · Contrast checker → · Palette generator →