#43398D
Closest named color: Dark Slate Blue (#483D8B). oklch(40.4% 0.134 284), rgb(67, 57, 141).
Aa
White text reads best on this color (9.50:1).
About this color
#43398D is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.134 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.015 away. White text reads best on it, at 9.50:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #43398D |
| RGB | rgb(67, 57, 141) |
| HSL | hsl(247, 42%, 39%) |
| OKLCH | oklch(40.4% 0.134 284) |
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 #43398D | 9.50:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #43398D | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #43398D text on white | 9.50:1 | AAA | Lc 91.7 | Preferred for body text |
| #43398D text on black | 2.20:1 | Fails | Lc -10.7 | 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 800.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D5D6F6
oklch(88.5% 0.044 284)
-
Step 300
300
#BABAF2
oklch(80.8% 0.079 284.5)
-
Step 400
400
#9795EC
oklch(70.7% 0.126 283.7)
-
Step 500
500
#8078E6
oklch(63.1% 0.161 284.1)
-
Step 600
600
#6B5ED4
oklch(55.6% 0.175 284.2)
-
Step 700
700
#594DB7
oklch(49.1% 0.161 283.9)
-
Step 800
800 (this color)
#43398D
oklch(40.4% 0.134 284)
-
Step 900
900
#3C3776
oklch(37.7% 0.104 283.8)
-
Step 950
950
#232145
oklch(27% 0.065 283.6)
#43398D 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) | #004890 | 0.067 |
| Deuteranopia (no green cones) | #00438B | 0.066 |
| Tritanopia (no blue cones) | #264C5D | 0.113 |
| Achromatopsia (no color) | #464646 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43398D
#43398D
oklch(40.4% 0.134 284)
- #514A00
#514A00
oklch(40.3% 0.085 103.3)
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 #43398D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.015
- Blueberry #464196 ΔE 0.025
- Cobalt #1E488F ΔE 0.055
- Rebecca Purple #663399 ΔE 0.067
- Sapphire #2138AB ΔE 0.067
- Twilight #4E518B ΔE 0.069
- Twilight Blue #0A437A ΔE 0.074
- Dusk Blue #26538D ΔE 0.074
Use #43398D 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.