#635BD7
Closest named color: Dark Periwinkle (#665FD1). oklch(54.7% 0.184 281.3), rgb(99, 91, 215).
Aa
White text reads best on this color (5.23:1).
About this color
#635BD7 is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.184 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.015 away. White text reads best on it, at 5.23:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.00:1 |
| White text | 5.23:1 |
Values
| HEX | #635BD7 |
| RGB | rgb(99, 91, 215) |
| HSL | hsl(244, 61%, 60%) |
| OKLCH | oklch(54.7% 0.184 281.3) |
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 #635BD7 | 5.23:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #635BD7 | 4.00:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #635BD7 text on white | 5.23:1 | AA | Lc 75.6 | Fine for body text |
| #635BD7 text on black | 4.00:1 | AA large text | Lc -26.1 | 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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D3D6F8
oklch(88.5% 0.047 281.4)
-
Step 300
300
#B7BBF6
oklch(81% 0.083 281.3)
-
Step 400
400
#9395F1
oklch(70.6% 0.133 281.5)
-
Step 500
500
#7B78EC
oklch(63.1% 0.17 281.5)
-
Step 600
600 (this color)
#635BD7
oklch(54.7% 0.184 281.3)
-
Step 700
700
#554CBD
oklch(49% 0.171 281.6)
-
Step 800
800
#453F99
oklch(42.6% 0.142 281.5)
-
Step 900
900
#39377A
oklch(37.7% 0.111 281)
-
Step 950
950
#212147
oklch(27% 0.069 280.7)
#635BD7 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) | #0071DB | 0.084 |
| Deuteranopia (no green cones) | #0068D4 | 0.081 |
| Tritanopia (no blue cones) | #2E7890 | 0.158 |
| Achromatopsia (no color) | #6C6C6C | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635BD7
#635BD7
oklch(54.7% 0.184 281.3)
- #7F7200
#7F7200
oklch(54.7% 0.114 101.5)
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 #635BD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.015
- Slate Blue #6A5ACD ΔE 0.019
- Light Indigo #6D5ACF ΔE 0.020
- Iris #6258C4 ΔE 0.030
- Warm Blue #4B57DB ΔE 0.037
- Royal Blue #4169E1 ΔE 0.050
- Neon Blue #4361EE ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.060
Use #635BD7 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.