#422F78
Closest named color: Dark Slate Blue (#483D8B). oklch(36.9% 0.119 291.4), rgb(66, 47, 120).
Aa
White text reads best on this color (10.99:1).
About this color
#422F78 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.119 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 10.99:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.90:1 |
| White text | 10.99:1 |
Values
| HEX | #422F78 |
| RGB | rgb(66, 47, 120) |
| HSL | hsl(256, 44%, 33%) |
| OKLCH | oklch(36.9% 0.119 291.4) |
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 #422F78 | 10.99:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #422F78 | 1.90:1 | Fails | Lc 8.8 | Not readable |
| #422F78 text on white | 10.99:1 | AAA | Lc 95.1 | Preferred for body text |
| #422F78 text on black | 1.90:1 | Fails | Lc -7.5 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D9D4F8
oklch(88.5% 0.049 291.7)
-
Step 300
300
#C1B7F6
oklch(81% 0.088 291.6)
-
Step 400
400
#A28FF2
oklch(70.8% 0.142 291.1)
-
Step 500
500
#8D6FED
oklch(63.1% 0.182 291.2)
-
Step 600
600
#7953DC
oklch(55.6% 0.199 291.3)
-
Step 700
700
#6642BF
oklch(49.1% 0.186 291.3)
-
Step 800
800
#53389A
oklch(42.8% 0.152 291.3)
-
Step 900
900 (this color)
#422F78
oklch(36.9% 0.119 291.4)
-
Step 950
950
#281E48
oklch(27.1% 0.075 291.5)
#422F78 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) | #003D7A | 0.075 |
| Deuteranopia (no green cones) | #053B76 | 0.073 |
| Tritanopia (no blue cones) | #333F4E | 0.097 |
| Achromatopsia (no color) | #3C3C3C | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #422F78
#422F78
oklch(36.9% 0.119 291.4)
- #414300
#414300
oklch(36.9% 0.081 111.7)
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 #422F78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Blueberry #464196 ΔE 0.066
- Indigo #4B0082 ΔE 0.072
- Twilight Blue #0A437A ΔE 0.077
- Royal Purple #4B006E ΔE 0.078
- Cobalt #1E488F ΔE 0.081
- Marine Blue #01386A ΔE 0.081
- Prussian Blue #1D3557 ΔE 0.084
Use #422F78 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.