#403D7B#403D7B

#403D7B is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.6% C 0.102 H 282.9°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#403D7B
RGB	rgb(64, 61, 123)
HSL	hsl(243, 34%, 36%)
HSV	hsv(243, 50%, 48%)
CMYK	cmyk(48%, 50.4%, 0%, 51.8%)
CIE-LAB	lab(29.05, 18.91, -35.02)
CIE-LCH	lch(29.05, 39.80, 298.37°)
OKLab	oklab(39.58% 0.0227 -0.0995)
OKLCH	oklch(39.58% 0.102 282.9)
XYZ	xyz(7.3572, 5.8572, 19.4779)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D7B #787B3D

analogous

#3D597B #403D7B #5F3D7B

triadic

#403D7B #7B403D #3D7B40

tetradic

#403D7B #7B3D59 #787B3D #3D7B5F

square

#403D7B #7B3D59 #787B3D #3D7B5F

split-complementary

#403D7B #7B5F3D #597B3D

monochromatic

#151429 #2B2952 #403D7B #5551A4 #7A77BC

Accessibility & contrast

On white

9.67

#403D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#403D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D7B

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D7B	#FFFFFF	#000000	##FFFFFF
##403D7B	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22477D

Deuteranopia (green-blind)

#1F427A

Tritanopia (blue-blind)

#2C4A56

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #403d7b;
/* rgb */ color: rgb(64, 61, 123);
/* oklch */ color: oklch(39.6% 0.102 282.9);

Tailwind

colors: {
  custom: {
    50: '#7972a1',
    500: '#403d7b',
    950: '#000000',
  },
}

SCSS

$custom: #403d7b;
$custom-light: #7972a1;
$custom-dark: #000000;

JSON

{
  "hex": "#403d7b",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 242.903,
    "s": 33.696,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39584,
    "c": 0.10202,
    "h": 282.9
  },
  "luminance": 0.05858
}

Semantic roles & 50–950 ramp

primary

#403D7B

secondary

#A3A66E

accent

#CA5EC5

background

#F7F6FA

surface

#EEECF3

border

#C9C7CD

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #403D7B

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

Preview Lab → · Contrast checker → · Palette generator →