#635BBB
Closest named color: Iris (#6258C4). oklch(52.7% 0.146 284), rgb(99, 91, 187).
Aa
White text reads best on this color (5.60:1).
About this color
#635BBB is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.146 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.017 away. White text reads best on it, at 5.60:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #635BBB |
| RGB | rgb(99, 91, 187) |
| HSL | hsl(245, 41%, 55%) |
| OKLCH | oklch(52.7% 0.146 284) |
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 #635BBB | 5.60:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #635BBB | 3.74:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #635BBB text on white | 5.60:1 | AA | Lc 77.8 | Fine for body text |
| #635BBB text on black | 3.74:1 | AA large text | Lc -24.0 | 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 600.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D5D6F1
oklch(88.4% 0.037 283.9)
-
Step 300
300
#BBBCEA
oklch(81% 0.065 283.9)
-
Step 400
400
#9897E0
oklch(70.6% 0.106 284)
-
Step 500
500
#817CD7
oklch(63.1% 0.134 284.3)
-
Step 600
600 (this color)
#635BBB
oklch(52.7% 0.146 284)
-
Step 700
700
#5952AA
oklch(49.1% 0.136 283.8)
-
Step 800
800
#49448A
oklch(42.8% 0.113 283.8)
-
Step 900
900
#3D3A6E
oklch(37.8% 0.087 284)
-
Step 950
950
#232240
oklch(26.9% 0.055 283.6)
#635BBB 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) | #2E6BBE | 0.068 |
| Deuteranopia (no green cones) | #2965B9 | 0.068 |
| Tritanopia (no blue cones) | #457082 | 0.125 |
| Achromatopsia (no color) | #686868 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635BBB
#635BBB
oklch(52.7% 0.146 284)
- #766D00
#766D00
oklch(52.6% 0.111 103.8)
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 #635BBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.017
- Slate Blue #6A5ACD ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.035
- Light Indigo #6D5ACF ΔE 0.035
- Warm Blue #4B57DB ΔE 0.062
- French Blue #436BAD ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.063
- Deep Lavender #8D5EB7 ΔE 0.071
Use #635BBB 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.