#6B51AA
Closest named color: Iris (#6258C4). oklch(50.5% 0.137 294.4), rgb(107, 81, 170).
Aa
White text reads best on this color (6.20:1).
About this color
#6B51AA is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.137 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.044 away. White text reads best on it, at 6.20:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #6B51AA |
| RGB | rgb(107, 81, 170) |
| HSL | hsl(258, 35%, 49%) |
| OKLCH | oklch(50.5% 0.137 294.4) |
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 #6B51AA | 6.20:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #6B51AA | 3.38:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #6B51AA text on white | 6.20:1 | AA | Lc 80.7 | Fine for body text |
| #6B51AA text on black | 3.38:1 | AA large text | Lc -21.1 | 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 700.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F0
oklch(88.5% 0.037 294.1)
-
Step 300
300
#C3B9E8
oklch(81% 0.066 294.6)
-
Step 400
400
#A593DC
oklch(70.7% 0.106 294.9)
-
Step 500
500
#8F77D3
oklch(63.1% 0.136 294.2)
-
Step 600
600
#7A5EC0
oklch(55.6% 0.148 294.3)
-
Step 700
700 (this color)
#6B51AA
oklch(50.5% 0.137 294.4)
-
Step 800
800
#544086
oklch(42.8% 0.113 294.3)
-
Step 900
900
#45376B
oklch(37.8% 0.087 294.2)
-
Step 950
950
#28203F
oklch(26.9% 0.057 294.1)
#6B51AA 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) | #2D62AD | 0.086 |
| Deuteranopia (no green cones) | #335FA8 | 0.080 |
| Tritanopia (no blue cones) | #5C6376 | 0.110 |
| Achromatopsia (no color) | #616161 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B51AA
#6B51AA
oklch(50.5% 0.137 294.4)
- #646B00
#646B00
oklch(50.4% 0.114 114.2)
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 #6B51AA, closest first.
No curated palette has a color within ΔE 0.04 of #6B51AA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.066
- Twilight #4E518B ΔE 0.069
- Deep Lavender #8D5EB7 ΔE 0.072
- Rebecca Purple #663399 ΔE 0.072
Use #6B51AA 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.