#6455B3
Closest named color: Iris (#6258C4). oklch(51.2% 0.144 287.5), rgb(100, 85, 179).
Aa
White text reads best on this color (6.01:1).
About this color
#6455B3 is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.144 and its hue 288°. 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 6.01:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #6455B3 |
| RGB | rgb(100, 85, 179) |
| HSL | hsl(250, 38%, 52%) |
| OKLCH | oklch(51.2% 0.144 287.5) |
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 #6455B3 | 6.01:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #6455B3 | 3.49:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #6455B3 text on white | 6.01:1 | AA | Lc 79.8 | Fine for body text |
| #6455B3 text on black | 3.49:1 | AA large text | Lc -22.0 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BDBAEC
oklch(80.8% 0.07 287.5)
-
Step 400
400
#9D95E2
oklch(70.7% 0.111 288)
-
Step 500
500
#8679DA
oklch(63.1% 0.143 287.7)
-
Step 600
600
#7060C7
oklch(55.5% 0.154 287.4)
-
Step 700
700 (this color)
#6455B3
oklch(51.2% 0.144 287.5)
-
Step 800
800
#4D418B
oklch(42.6% 0.118 287.7)
-
Step 900
900
#40386F
oklch(37.7% 0.092 287.9)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#6455B3 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) | #2A65B6 | 0.075 |
| Deuteranopia (no green cones) | #2960B1 | 0.073 |
| Tritanopia (no blue cones) | #4C697C | 0.120 |
| Achromatopsia (no color) | #636363 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6455B3
#6455B3
oklch(51.2% 0.144 287.5)
- #6E6A00
#6E6A00
oklch(51.1% 0.11 107.1)
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 #6455B3, 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 0.043
- Light Indigo #6D5ACF ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.051
- Bluey Purple #6241C7 ΔE 0.057
- French Blue #436BAD ΔE 0.070
- Warm Blue #4B57DB ΔE 0.071
- Dusky Blue #475F94 ΔE 0.073
Use #6455B3 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.