#423066
Closest named color: Prussian Blue (#1D3557). oklch(35.7% 0.092 296.9), rgb(66, 48, 102).
Aa
White text reads best on this color (11.37:1).
About this color
#423066 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.092 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.066 away. White text reads best on it, at 11.37:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.84:1 |
| White text | 11.37:1 |
Values
| HEX | #423066 |
| RGB | rgb(66, 48, 102) |
| HSL | hsl(260, 36%, 29%) |
| OKLCH | oklch(35.7% 0.092 296.9) |
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 #423066 | 11.37:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #423066 | 1.84:1 | Fails | Lc 7.8 | Not readable |
| #423066 text on white | 11.37:1 | AAA | Lc 96.1 | Preferred for body text |
| #423066 text on black | 1.84:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DBD4F0
oklch(88.4% 0.039 297)
-
Step 300
300
#C5B8E8
oklch(80.9% 0.068 297.3)
-
Step 400
400
#A892DD
oklch(70.8% 0.11 297)
-
Step 500
500
#9375D3
oklch(63.1% 0.14 296.9)
-
Step 600
600
#7E5BC1
oklch(55.5% 0.154 296.9)
-
Step 700
700
#6A4BA6
oklch(49.1% 0.141 296.6)
-
Step 800
800
#573E87
oklch(42.8% 0.118 296.9)
-
Step 900
900 (this color)
#423066
oklch(35.7% 0.092 296.9)
-
Step 950
950
#2A203F
oklch(27.1% 0.057 297.3)
#423066 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) | #1D3A68 | 0.058 |
| Deuteranopia (no green cones) | #213965 | 0.054 |
| Tritanopia (no blue cones) | #3A3A46 | 0.072 |
| Achromatopsia (no color) | #3A3A3A | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423066
#423066
oklch(35.7% 0.092 296.9)
- #3A4100
#3A4100
oklch(35.6% 0.082 116.4)
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 #423066, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.069
- Marine Blue #01386A ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.079
- Twilight Blue #0A437A ΔE 0.080
- Dark Blue Grey #1F3B4D ΔE 0.080
- Grape Purple #5D1451 ΔE 0.081
Use #423066 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.