#635FD2
Closest named color: Dark Periwinkle (#665FD1). oklch(55% 0.172 280.7), rgb(99, 95, 210).
Aa
White text reads best on this color (5.12:1).
About this color
#635FD2 is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.172 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.005 away. White text reads best on it, at 5.12:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.09:1 |
| White text | 5.12:1 |
Values
| HEX | #635FD2 |
| RGB | rgb(99, 95, 210) |
| HSL | hsl(242, 56%, 60%) |
| OKLCH | oklch(55% 0.172 280.7) |
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 #635FD2 | 5.12:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #635FD2 | 4.09:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #635FD2 text on white | 5.12:1 | AA | Lc 75.0 | Fine for body text |
| #635FD2 text on black | 4.09:1 | AA large text | Lc -26.7 | 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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E9F9
oklch(93.7% 0.022 280.3)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B7BCF2
oklch(81% 0.076 280.4)
-
Step 400
400
#9397EC
oklch(70.8% 0.123 280.7)
-
Step 500
500
#7A7AE6
oklch(63% 0.159 280.8)
-
Step 600
600 (this color)
#635FD2
oklch(55% 0.172 280.7)
-
Step 700
700
#544FB8
oklch(49.1% 0.161 280.8)
-
Step 800
800
#444295
oklch(42.8% 0.133 280.3)
-
Step 900
900
#393876
oklch(37.6% 0.103 280.9)
-
Step 950
950
#212145
oklch(26.8% 0.066 281)
#635FD2 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) | #1572D6 | 0.077 |
| Deuteranopia (no green cones) | #0069D0 | 0.079 |
| Tritanopia (no blue cones) | #33798F | 0.148 |
| Achromatopsia (no color) | #6E6E6E | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635FD2
#635FD2
oklch(55% 0.172 280.7)
- #817300
#817300
oklch(55.1% 0.115 100.9)
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 #635FD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.005
- Slate Blue #6A5ACD ΔE 0.016
- Light Indigo #6D5ACF ΔE 0.018
- Iris #6258C4 ΔE 0.026
- Warm Blue #4B57DB ΔE 0.043
- Royal Blue #4169E1 ΔE 0.049
- Neon Blue #4361EE ΔE 0.058
- Medium Slate Blue #7B68EE ΔE 0.060
Use #635FD2 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.