#400057 Color
#400057 is rgb(64, 0, 87) in RGB, hsl(284, 100%, 17%) in HSL, and about cmyk(26%, 100%, 0%, 66%) in CMYK. It has no registered color name of its own — the closest is Petunia (#470659), very hard to tell apart at ΔE 3.3. White text is the more readable choice on this background.
#400057rgb(64, 0, 87)hsl(284, 100%, 17%)hsv(284, 100%, 34%)cmyk(26%, 100%, 0%, 66%)oklch(28% 0.139 313.7)lab(13.93% 38.07 -35.75)lch(13.93% 52.23 316.80)What #400057 Is Called
Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #400057, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.
Browse the full index of named colors A-Z or every purple in the library.
#400057 Channel Values
How #400057 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.
| Model | Channels | Notes |
|---|---|---|
| RGB | R 64 · G 0 · B 87 | 8-bit channels as sent to the display |
| HSL | H 284° · S 100% · L 17% | Easiest model for building lighter and darker variants |
| HSV | H 284° · S 100% · V 34% | Matches the picker in most design tools |
| CMYK | C 26% · M 100% · Y 0% · K 66% | Approximate ink mix; confirm with an ICC profile before printing |
| Luminance | 15.49:1 vs white · 1.36:1 vs black | WCAG 2.2 relative-luminance contrast ratios |
Text Contrast & Accessibility
WCAG 2.2 contrast ratios for text on a #400057 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.
Need a specific ratio against another background? Open #400057 in the contrast checker.
Colors That Go With #400057
Pairings derived from color-wheel relationships. The complementary color sits opposite #400057; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.
Tints & Shades of #400057
Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.
Want a full 50-950 ramp with semantic roles? Generate design tokens from #400057.
How #400057 Looks with Color Vision Deficiency
Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.
#400057#171757#2D1057#232356#311A57#381D1D#3B143C#242424Using #400057 in Code
Copy-ready declarations for the places this color usually ends up.
--color-400057: #400057;background-color: #400057;colors: { 'color-400057': '#400057' }Color(red: 0.251, green: 0.000, blue: 0.341)<color name="color_400057">#400057</color>fill="#400057"More Purple Colors
#400057 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.
#400057 Frequently Asked Questions
What color is #400057?
#400057 is a darkest purple — rgb(64, 0, 87) in RGB and hsl(284, 100%, 17%) in HSL. It carries no registered color name of its own; the closest named color is Petunia (#470659), which is very hard to tell apart at a CIE76 distance of 3.3.
What is the RGB value of #400057?
#400057 is rgb(64, 0, 87) — red 64, green 0, and blue 87 on the 0-255 scale.
What is the CMYK value of #400057?
#400057 converts to approximately cmyk(26%, 100%, 0%, 66%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.
Should text on #400057 be black or white?
White text is the more readable choice. #400057 scores 15.49:1 against white and 1.36:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.
Can I write #400057 as a CSS color keyword?
No. #400057 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is midnightblue (#191970) at a CIE76 distance of 19.43, which is visibly different.
Open #400057 in a Tool
Keep exploring: every purple in the color library, the guide to shades of purple, or the full color library.