#491C98
Closest named color: Imperial Purple (#480CA8). oklch(37.8% 0.182 291.5), rgb(73, 28, 152).
Aa
White text reads best on this color (11.03:1).
About this color
#491C98 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.182 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Imperial Purple (#480CA8), ΔE 0.029 away. White text reads best on it, at 11.03:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Imperial Purple (#480CA8) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #491C98 |
| RGB | rgb(73, 28, 152) |
| HSL | hsl(262, 69%, 35%) |
| OKLCH | oklch(37.8% 0.182 291.5) |
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 #491C98 | 11.03:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #491C98 | 1.90:1 | Fails | Lc 9.5 | Not readable |
| #491C98 text on white | 11.03:1 | AAA | Lc 94.4 | Preferred for body text |
| #491C98 text on black | 1.90:1 | Fails | Lc -8.1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E6FF
oklch(93.5% 0.034 291.2)
-
Step 200
200
#D9D3FF
oklch(88.6% 0.06 291.4)
-
Step 300
300
#C1B5FF
oklch(81% 0.104 291.3)
-
Step 400
400
#A38AFF
oklch(70.7% 0.167 291.4)
-
Step 500
500
#9066FF
oklch(63.1% 0.217 291.6)
-
Step 600
600
#7F36FF
oklch(55.6% 0.268 291.5)
-
Step 700
700
#6E00EB
oklch(49% 0.275 291.3)
-
Step 800
800
#5A09C1
oklch(42.7% 0.235 291.4)
-
Step 900
900 (this color)
#491C98
oklch(37.8% 0.182 291.5)
-
Step 950
950
#2A1459
oklch(27.1% 0.116 291.3)
#491C98 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) | #003E9B | 0.097 |
| Deuteranopia (no green cones) | #003996 | 0.093 |
| Tritanopia (no blue cones) | #2D405B | 0.142 |
| Achromatopsia (no color) | #3C3C3C | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #491C98
#491C98
oklch(37.8% 0.182 291.5)
- #444600
#444600
oklch(38% 0.084 111.6)
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 #491C98, closest first.
No curated palette has a color within ΔE 0.04 of #491C98.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Purple #480CA8 ΔE 0.029
- Chrysanthemum #560BAD ΔE 0.042
- Indigo #4B0082 ΔE 0.051
- Indigo Blue #3A18B1 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.069
- Blueberry #464196 ΔE 0.074
- Rebecca Purple #663399 ΔE 0.075
- Violet Blue #510AC9 ΔE 0.080
Use #491C98 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.