#040641#040641

#040641 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.6% C 0.107 H 268.1°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#040641
RGB	rgb(4, 6, 65)
HSL	hsl(238, 88%, 14%)
HSV	hsv(238, 94%, 25%)
CMYK	cmyk(93.8%, 90.8%, 0%, 74.5%)
CIE-LAB	lab(4.86, 22.13, -35.89)
CIE-LCH	lch(4.86, 42.16, 301.66°)
OKLab	oklab(18.57% -0.0035 -0.1066)
OKLCH	oklch(18.57% 0.107 268.1)
XYZ	xyz(1.0690, 0.5376, 5.0474)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040641 #413F04

analogous

#042441 #040641 #200441

triadic

#040641 #410406 #064104

tetradic

#040641 #410424 #413F04 #044120

square

#040641 #410424 #413F04 #044120

split-complementary

#040641 #412004 #244104

monochromatic

#02031D #02031D #040641 #080B7B #0B11B4

Accessibility & contrast

On white

18.96

#040641 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040641 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040641

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040641	#FFFFFF	#000000	##FFFFFF
##040641	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001443

Deuteranopia (green-blind)

#000D40

Tritanopia (blue-blind)

#001824

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040641;
/* rgb */ color: rgb(4, 6, 65);
/* oklch */ color: oklch(18.6% 0.107 268.1);

Tailwind

colors: {
  custom: {
    50: '#524876',
    500: '#040641',
    950: '#000000',
  },
}

SCSS

$custom: #040641;
$custom-light: #524876;
$custom-dark: #000000;

JSON

{
  "hex": "#040641",
  "rgb": {
    "r": 4,
    "g": 6,
    "b": 65
  },
  "hsl": {
    "h": 238.033,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.18569,
    "c": 0.10669,
    "h": 268.1
  },
  "luminance": 0.00538
}

Semantic roles & 50–950 ramp

primary

#040641

secondary

#827F1F

accent

#F829FF

background

#F5F4F7

surface

#E8E6ED

border

#C4C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #040641

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

Preview Lab → · Contrast checker → · Palette generator →