#43407F
Closest named color: Dark Slate Blue (#483D8B). oklch(40.7% 0.103 283), rgb(67, 64, 127).
Aa
White text reads best on this color (9.21:1).
About this color
#43407F is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.103 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.024 away. White text reads best on it, at 9.21:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #43407F |
| RGB | rgb(67, 64, 127) |
| HSL | hsl(243, 33%, 37%) |
| OKLCH | oklch(40.7% 0.103 283) |
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 #43407F | 9.21:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #43407F | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #43407F text on white | 9.21:1 | AAA | Lc 91.1 | Preferred for body text |
| #43407F text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#BABCE7
oklch(80.8% 0.06 282.9)
-
Step 400
400
#9899DB
oklch(70.7% 0.096 283)
-
Step 500
500
#807ED1
oklch(63.1% 0.123 283.4)
-
Step 600
600
#6A66BE
oklch(55.6% 0.134 283.2)
-
Step 700
700
#5854A4
oklch(49% 0.125 283)
-
Step 800
800 (this color)
#43407F
oklch(40.7% 0.103 283)
-
Step 900
900
#3C3B6B
oklch(37.7% 0.081 282.8)
-
Step 950
950
#23233E
oklch(27% 0.05 282.6)
#43407F 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) | #264A81 | 0.043 |
| Deuteranopia (no green cones) | #22457E | 0.043 |
| Tritanopia (no blue cones) | #2F4D59 | 0.088 |
| Achromatopsia (no color) | #484848 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43407F
#43407F
oklch(40.7% 0.103 283)
- #524B00
#524B00
oklch(40.7% 0.086 103.4)
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 #43407F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.024
- Blueberry #464196 ΔE 0.038
- Cobalt #1E488F ΔE 0.051
- Twilight #4E518B ΔE 0.054
- Dusk Blue #26538D ΔE 0.060
- Light Navy #155084 ΔE 0.061
- Twilight Blue #0A437A ΔE 0.061
- Dusk #4E5481 ΔE 0.061
Use #43407F 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.