#43317D
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.123 290.1), rgb(67, 49, 125).
Aa
White text reads best on this color (10.63:1).
About this color
#43317D is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.123 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 10.63:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #43317D |
| RGB | rgb(67, 49, 125) |
| HSL | hsl(254, 44%, 34%) |
| OKLCH | oklch(37.7% 0.123 290.1) |
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 #43317D | 10.63:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #43317D | 1.97:1 | Fails | Lc 9.6 | Not readable |
| #43317D text on white | 10.63:1 | AAA | Lc 94.4 | Preferred for body text |
| #43317D text on black | 1.97:1 | Fails | Lc -8.2 | 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 900.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#BFB7F9
oklch(80.9% 0.093 289.7)
-
Step 400
400
#A08EF6
oklch(70.6% 0.149 290)
-
Step 500
500
#8B6EF1
oklch(63% 0.189 290.1)
-
Step 600
600
#7752E0
oklch(55.6% 0.205 290.1)
-
Step 700
700
#6441C3
oklch(49.1% 0.192 289.8)
-
Step 800
800
#52379D
oklch(42.7% 0.157 290.3)
-
Step 900
900 (this color)
#43317D
oklch(37.7% 0.123 290.1)
-
Step 950
950
#271E49
oklch(27.1% 0.077 289.9)
#43317D 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) | #004080 | 0.075 |
| Deuteranopia (no green cones) | #013D7B | 0.074 |
| Tritanopia (no blue cones) | #324252 | 0.100 |
| Achromatopsia (no color) | #3E3E3E | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43317D
#43317D
oklch(37.7% 0.123 290.1)
- #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 #43317D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.056
- Indigo #4B0082 ΔE 0.074
- Cobalt #1E488F ΔE 0.074
- Twilight Blue #0A437A ΔE 0.076
- Rebecca Purple #663399 ΔE 0.080
- Royal Purple #4B006E ΔE 0.084
- Marine Blue #01386A ΔE 0.084
Use #43317D 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.