#040227#040227

#040227 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 13.7% C 0.076 H 274.1°. Best body text is #FFFFFF at 20.13:1 contrast (WCAG AA passes).

Color values

HEX	#040227
RGB	rgb(4, 2, 39)
HSL	hsl(243, 90%, 8%)
HSV	hsv(243, 95%, 15%)
CMYK	cmyk(89.7%, 94.9%, 0%, 84.7%)
CIE-LAB	lab(1.95, 9.54, -21.27)
CIE-LCH	lch(1.95, 23.31, 294.16°)
OKLab	oklab(13.75% 0.0055 -0.0763)
OKLCH	oklch(13.75% 0.076 274.1)
XYZ	xyz(0.4379, 0.2157, 1.9376)
Luminance	0.0022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040227 #252702

analogous

#021227 #040227 #160227

triadic

#040227 #270402 #022704

tetradic

#040227 #270212 #252702 #022716

square

#040227 #270212 #252702 #022716

split-complementary

#040227 #271602 #122702

monochromatic

#03011D #03011D #040227 #0A0561 #10089B

Accessibility & contrast

On white

20.13

#040227 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#040227 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040227

20.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040227	#FFFFFF	#000000	##FFFFFF
##040227	1.00	20.13	1.04	20.13
#FFFFFF	20.13	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000928

Deuteranopia (green-blind)

#000626

Tritanopia (blue-blind)

#000B13

Achromatopsia (no color)

#070707

Design tokens & code

CSS

--color: #040227;
/* rgb */ color: rgb(4, 2, 39);
/* oklch */ color: oklch(13.7% 0.076 274.1);

Tailwind

colors: {
  custom: {
    50: '#484761',
    500: '#040227',
    950: '#000000',
  },
}

SCSS

$custom: #040227;
$custom-light: #484761;
$custom-dark: #000000;

JSON

{
  "hex": "#040227",
  "rgb": {
    "r": 4,
    "g": 2,
    "b": 39
  },
  "hsl": {
    "h": 243.243,
    "s": 90.244,
    "l": 8.039
  },
  "oklch": {
    "l": 0.13748,
    "c": 0.07647,
    "h": 274.1
  },
  "luminance": 0.00216
}

Semantic roles & 50–950 ramp

primary

#040227

secondary

#686C18

accent

#FF29F3

background

#F4F4F5

surface

#E7E6EA

border

#C3C2C6

text

#010005

muted

#777779

Preview Lab

Preview with #040227

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

Preview Lab → · Contrast checker → · Palette generator →