#6155B3
Closest named color: Iris (#6258C4). oklch(50.9% 0.144 285.9), rgb(97, 85, 179).
Aa
White text reads best on this color (6.07:1).
About this color
#6155B3 is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.144 and its hue 286°. 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 6.07:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #6155B3 |
| RGB | rgb(97, 85, 179) |
| HSL | hsl(248, 38%, 52%) |
| OKLCH | oklch(50.9% 0.144 285.9) |
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 #6155B3 | 6.07:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #6155B3 | 3.45:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #6155B3 text on white | 6.07:1 | AA | Lc 80.1 | Fine for body text |
| #6155B3 text on black | 3.45:1 | AA large text | Lc -21.7 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEC
oklch(80.9% 0.069 285.7)
-
Step 400
400
#9B96E3
oklch(70.8% 0.111 286.2)
-
Step 500
500
#837ADB
oklch(63.1% 0.143 285.8)
-
Step 600
600
#6E61C8
oklch(55.6% 0.154 286)
-
Step 700
700 (this color)
#6155B3
oklch(50.9% 0.144 285.9)
-
Step 800
800
#4B428C
oklch(42.7% 0.118 285.8)
-
Step 900
900
#3E3870
oklch(37.6% 0.093 285.9)
-
Step 950
950
#242142
oklch(26.9% 0.06 285.8)
#6155B3 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) | #2865B6 | 0.072 |
| Deuteranopia (no green cones) | #2660B1 | 0.071 |
| Tritanopia (no blue cones) | #47697C | 0.120 |
| Achromatopsia (no color) | #626262 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6155B3
#6155B3
oklch(50.9% 0.144 285.9)
- #6F6900
#6F6900
oklch(51% 0.109 105.7)
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 #6155B3, 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 0.044
- Light Indigo #6D5ACF ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.056
- French Blue #436BAD ΔE 0.068
- Warm Blue #4B57DB ΔE 0.069
- Dusky Blue #475F94 ΔE 0.070
Use #6155B3 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.