#905AC9
Closest named color: Amethyst (#9B5FC0). oklch(57.7% 0.169 304.1), rgb(144, 90, 201).
Aa
White text reads best on this color (4.67:1).
About this color
#905AC9 is a medium-dark, vivid purple. In OKLCH its lightness is 58%, its chroma 0.169 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.029 away. White text reads best on it, at 4.67:1.
| Hue family | Purples |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.49:1 |
| White text | 4.67:1 |
Values
| HEX | #905AC9 |
| RGB | rgb(144, 90, 201) |
| HSL | hsl(269, 51%, 57%) |
| OKLCH | oklch(57.7% 0.169 304.1) |
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 #905AC9 | 4.67:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #905AC9 | 4.49:1 | AA large text | Lc 31.9 | Non-text elements, placeholder text |
| #905AC9 text on white | 4.67:1 | AA | Lc 72.1 | Content text, not long reading |
| #905AC9 text on black | 4.49:1 | AA large text | Lc -29.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE7F6
oklch(93.7% 0.021 304)
-
Step 200
200
#DFD3F0
oklch(88.5% 0.041 304.3)
-
Step 300
300
#CBB5E9
oklch(80.9% 0.076 304)
-
Step 400
400
#B18DDE
oklch(70.7% 0.121 303.9)
-
Step 500
500
#9E6ED5
oklch(63.1% 0.156 303.8)
-
Step 600
600 (this color)
#905AC9
oklch(57.7% 0.169 304.1)
-
Step 700
700
#7543A7
oklch(49.1% 0.157 304.3)
-
Step 800
800
#5F3888
oklch(42.7% 0.131 303.9)
-
Step 900
900
#4E316D
oklch(37.7% 0.102 304.3)
-
Step 950
950
#2D1D40
oklch(26.9% 0.065 303.4)
#905AC9 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) | #3173CD | 0.131 |
| Deuteranopia (no green cones) | #4474C6 | 0.118 |
| Tritanopia (no blue cones) | #866F89 | 0.125 |
| Achromatopsia (no color) | #747474 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #905AC9
#905AC9
oklch(57.7% 0.169 304.1)
- #688700
#688700
oklch(57.8% 0.144 124.2)
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 #905AC9, closest first.
No curated palette has a color within ΔE 0.04 of #905AC9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.029
- Deep Lavender #8D5EB7 ΔE 0.031
- Purpley #8756E4 ΔE 0.047
- Medium Purple #9370DB ΔE 0.055
- Deep Lilac #966EBD ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.060
- Purply #983FB2 ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.064
Use #905AC9 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.