#6D55B1
Closest named color: Iris (#6258C4). oklch(51.9% 0.141 292.9), rgb(109, 85, 177).
Aa
White text reads best on this color (5.85:1).
About this color
#6D55B1 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.141 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.034 away. White text reads best on it, at 5.85:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #6D55B1 |
| RGB | rgb(109, 85, 177) |
| HSL | hsl(256, 37%, 51%) |
| OKLCH | oklch(51.9% 0.141 292.9) |
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 #6D55B1 | 5.85:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #6D55B1 | 3.58:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #6D55B1 text on white | 5.85:1 | AA | Lc 79.1 | Fine for body text |
| #6D55B1 text on black | 3.58:1 | AA large text | Lc -22.7 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#D9D5F1
oklch(88.5% 0.038 292.2)
-
Step 300
300
#C2B9E9
oklch(80.9% 0.068 293.4)
-
Step 400
400
#A393DF
oklch(70.6% 0.11 293)
-
Step 500
500
#8D77D5
oklch(63% 0.139 292.7)
-
Step 600
600
#785EC3
oklch(55.6% 0.152 292.6)
-
Step 700
700 (this color)
#6D55B1
oklch(51.9% 0.141 292.9)
-
Step 800
800
#534088
oklch(42.8% 0.116 293)
-
Step 900
900
#44376D
oklch(37.8% 0.09 292.6)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#6D55B1 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) | #2F66B4 | 0.084 |
| Deuteranopia (no green cones) | #3463AF | 0.079 |
| Tritanopia (no blue cones) | #5C687B | 0.114 |
| Achromatopsia (no color) | #656565 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D55B1
#6D55B1
oklch(51.9% 0.141 292.9)
- #6A6F00
#6A6F00
oklch(52% 0.116 112.9)
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 #6D55B1, closest first.
No curated palette has a color within ΔE 0.04 of #6D55B1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.034
- Slate Blue #6A5ACD ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.053
- Deep Lavender #8D5EB7 ΔE 0.062
- Bluey Purple #6241C7 ΔE 0.063
- French Blue #436BAD ΔE 0.077
- Dusky Blue #475F94 ΔE 0.079
Use #6D55B1 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.