#403C8E#403C8E

#403C8E is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.8% C 0.132 H 281.0°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#403C8E
RGB	rgb(64, 60, 142)
HSL	hsl(243, 41%, 40%)
HSV	hsv(243, 58%, 56%)
CMYK	cmyk(54.9%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(30.09, 25.89, -45.15)
CIE-LCH	lch(30.09, 52.05, 299.83°)
OKLab	oklab(40.78% 0.0252 -0.1292)
OKLCH	oklch(40.78% 0.132 281)
XYZ	xyz(8.6112, 6.2742, 26.3432)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C8E #8A8E3C

analogous

#3C618E #403C8E #693C8E

triadic

#403C8E #8E403C #3C8E40

tetradic

#403C8E #8E3C61 #8A8E3C #3C8E69

square

#403C8E #8E3C61 #8A8E3C #3C8E69

split-complementary

#403C8E #8E693C #618E3C

monochromatic

#191838 #2D2A63 #403C8E #5652B6 #807DC8

Accessibility & contrast

On white

9.31

#403C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#403C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C8E

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C8E	#FFFFFF	#000000	##FFFFFF
##403C8E	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A91

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#1D4F5F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #403c8e;
/* rgb */ color: rgb(64, 60, 142);
/* oklch */ color: oklch(40.8% 0.132 281.0);

Tailwind

colors: {
  custom: {
    50: '#7c72b0',
    500: '#403c8e',
    950: '#000000',
  },
}

SCSS

$custom: #403c8e;
$custom-light: #7c72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#403c8e",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 242.927,
    "s": 40.594,
    "l": 39.608
  },
  "oklch": {
    "l": 0.40785,
    "c": 0.13168,
    "h": 281
  },
  "luminance": 0.06275
}

Semantic roles & 50–950 ramp

primary

#403C8E

secondary

#AFB274

accent

#D057CB

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403C8E

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

Preview Lab → · Contrast checker → · Palette generator →