#43376E
Closest named color: Dark Slate Blue (#483D8B). oklch(37.8% 0.092 291.4), rgb(67, 55, 110).
Aa
White text reads best on this color (10.44:1).
About this color
#43376E is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.092 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 0.051 away. White text reads best on it, at 10.44:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.01:1 |
| White text | 10.44:1 |
Values
| HEX | #43376E |
| RGB | rgb(67, 55, 110) |
| HSL | hsl(253, 33%, 32%) |
| OKLCH | oklch(37.8% 0.092 291.4) |
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 #43376E | 10.44:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #43376E | 2.01:1 | Fails | Lc 9.8 | Not readable |
| #43376E text on white | 10.44:1 | AAA | Lc 94.1 | Preferred for body text |
| #43376E text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F7
oklch(93.7% 0.02 292.1)
-
Step 200
200
#D9D5F1
oklch(88.5% 0.038 292.2)
-
Step 300
300
#C0B9EA
oklch(80.8% 0.069 291.3)
-
Step 400
400
#A194E0
oklch(70.7% 0.11 291.2)
-
Step 500
500
#8B78D7
oklch(63.2% 0.14 291)
-
Step 600
600
#765EC4
oklch(55.5% 0.153 291.4)
-
Step 700
700
#644DAA
oklch(49.1% 0.143 291.6)
-
Step 800
800
#514089
oklch(42.7% 0.117 291.4)
-
Step 900
900 (this color)
#43376E
oklch(37.8% 0.092 291.4)
-
Step 950
950
#272040
oklch(26.9% 0.058 292.1)
#43376E 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) | #234070 | 0.049 |
| Deuteranopia (no green cones) | #243E6D | 0.048 |
| Tritanopia (no blue cones) | #38424D | 0.076 |
| Achromatopsia (no color) | #404040 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43376E
#43376E
oklch(37.8% 0.092 291.4)
- #444500
#444500
oklch(37.7% 0.083 110.7)
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 #43376E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight Blue #0A437A ΔE 0.068
- Blueberry #464196 ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.072
- Marine Blue #01386A ΔE 0.076
- Cobalt #1E488F ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.083
Use #43376E 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.