#781B8B
Closest named color: Purple (#800080). oklch(42.9% 0.181 320), rgb(120, 27, 139).
Aa
White text reads best on this color (9.01:1).
About this color
#781B8B is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.181 and its hue 320°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple (#800080), ΔE 0.031 away. White text reads best on it, at 9.01:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Purple (#800080) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #781B8B |
| RGB | rgb(120, 27, 139) |
| HSL | hsl(290, 67%, 33%) |
| OKLCH | oklch(42.9% 0.181 320) |
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 #781B8B | 9.01:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #781B8B | 2.32:1 | Fails | Lc 14.5 | Not readable |
| #781B8B text on white | 9.01:1 | AAA | Lc 89.5 | Fine for body text |
| #781B8B text on black | 2.32:1 | Fails | Lc -12.7 | 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
#FAF3FC
oklch(97.2% 0.014 318.7)
-
Step 100
100
#F3E4F7
oklch(93.6% 0.03 319.1)
-
Step 200
200
#EBCDF2
oklch(88.5% 0.059 319.8)
-
Step 300
300
#DFAAEB
oklch(80.8% 0.106 320)
-
Step 400
400
#CE7AE1
oklch(70.7% 0.168 320)
-
Step 500
500
#C050D9
oklch(63.1% 0.218 319.9)
-
Step 600
600
#AB2AC6
oklch(55.5% 0.236 319.8)
-
Step 700
700
#9319AB
oklch(49.1% 0.219 320)
-
Step 800
800 (this color)
#781B8B
oklch(42.9% 0.181 320)
-
Step 900
900
#611F6F
oklch(37.8% 0.141 320.1)
-
Step 950
950
#391441
oklch(27.1% 0.089 320.1)
#781B8B 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) | #00438E | 0.175 |
| Deuteranopia (no green cones) | #264C89 | 0.159 |
| Tritanopia (no blue cones) | #783353 | 0.111 |
| Achromatopsia (no color) | #494949 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #781B8B
#781B8B
oklch(42.9% 0.181 320)
- #196000
#196000
oklch(42.8% 0.138 140)
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 #781B8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple #800080 ΔE 0.031
- Dark Magenta #8B008B ΔE 0.041
- Rebecca Purple #663399 ΔE 0.055
- Warm Purple #952E8F ΔE 0.071
- Grape #7209B7 ΔE 0.076
- Rich Purple #720058 ΔE 0.088
- Light Eggplant #894585 ΔE 0.093
- Velvet #750851 ΔE 0.097
Use #781B8B 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.