#42217B
Closest named color: Indigo (#4B0082). oklch(34.9% 0.143 294.6), rgb(66, 33, 123).
Aa
White text reads best on this color (12.10:1).
About this color
#42217B is a dark, vivid purple. In OKLCH its lightness is 35%, its chroma 0.143 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.042 away. White text reads best on it, at 12.10:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.73:1 |
| White text | 12.10:1 |
Values
| HEX | #42217B |
| RGB | rgb(66, 33, 123) |
| HSL | hsl(262, 58%, 31%) |
| OKLCH | oklch(34.9% 0.143 294.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #42217B | 12.10:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #42217B | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #42217B text on white | 12.10:1 | AAA | Lc 97.0 | Preferred for body text |
| #42217B text on black | 1.73:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FD
oklch(93.6% 0.031 295.8)
-
Step 200
200
#DBD2FD
oklch(88.5% 0.059 294.8)
-
Step 300
300
#C5B3FF
oklch(80.9% 0.107 294.8)
-
Step 400
400
#A987FF
oklch(70.7% 0.172 294.7)
-
Step 500
500
#9663FD
oklch(63.1% 0.219 294.6)
-
Step 600
600
#8242ED
oklch(55.6% 0.239 294.3)
-
Step 700
700
#6F31CE
oklch(49.1% 0.222 294.7)
-
Step 800
800
#5A2BA6
oklch(42.7% 0.184 294.8)
-
Step 900
900 (this color)
#42217B
oklch(34.9% 0.143 294.6)
-
Step 950
950
#2B1A4D
oklch(27.1% 0.09 295.1)
#42217B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #00377E | 0.087 |
| Deuteranopia (no green cones) | #003479 | 0.086 |
| Tritanopia (no blue cones) | #32384B | 0.113 |
| Achromatopsia (no color) | #363636 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42217B
#42217B
oklch(34.9% 0.143 294.6)
- #3A3E00
#3A3E00
oklch(34.8% 0.078 113.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #42217B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.042
- Royal Purple #4B006E ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.071
- Imperial Purple #480CA8 ΔE 0.077
- Midnight Blue #191970 ΔE 0.081
- Blueberry #464196 ΔE 0.086
- Chrysanthemum #560BAD ΔE 0.090
- Plum Purple #4E0550 ΔE 0.090
Use #42217B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.