#6B5BB7
Closest named color: Iris (#6258C4). oklch(53.1% 0.14 288.7), rgb(107, 91, 183).
Aa
White text reads best on this color (5.51:1).
About this color
#6B5BB7 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 53%, its chroma 0.140 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.027 away. White text reads best on it, at 5.51:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #6B5BB7 |
| RGB | rgb(107, 91, 183) |
| HSL | hsl(250, 39%, 54%) |
| OKLCH | oklch(53.1% 0.14 288.7) |
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 #6B5BB7 | 5.51:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #6B5BB7 | 3.80:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #6B5BB7 text on white | 5.51:1 | AA | Lc 77.4 | Fine for body text |
| #6B5BB7 text on black | 3.80:1 | AA large text | Lc -24.4 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D6F0
oklch(88.6% 0.036 289.2)
-
Step 300
300
#BEBBE8
oklch(81% 0.063 288)
-
Step 400
400
#9E96DC
oklch(70.7% 0.101 288.8)
-
Step 500
500
#877BD2
oklch(63.1% 0.128 288.5)
-
Step 600
600 (this color)
#6B5BB7
oklch(53.1% 0.14 288.7)
-
Step 700
700
#6051A5
oklch(49.1% 0.13 288.9)
-
Step 800
800
#4E4386
oklch(42.8% 0.108 288.5)
-
Step 900
900
#41396B
oklch(37.8% 0.084 289.1)
-
Step 950
950
#26223F
oklch(27.2% 0.053 288.7)
#6B5BB7 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) | #356BBA | 0.073 |
| Deuteranopia (no green cones) | #3566B5 | 0.071 |
| Tritanopia (no blue cones) | #556E80 | 0.117 |
| Achromatopsia (no color) | #696969 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5BB7
#6B5BB7
oklch(53.1% 0.14 288.7)
- #727100
#727100
oklch(53.2% 0.116 109.1)
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 #6B5BB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.027
- Slate Blue #6A5ACD ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.041
- Deep Lavender #8D5EB7 ΔE 0.059
- French Blue #436BAD ΔE 0.068
- Bluey Purple #6241C7 ΔE 0.069
- Warm Blue #4B57DB ΔE 0.074
Use #6B5BB7 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.