#635BB5
Closest named color: Iris (#6258C4). oklch(52.3% 0.138 284.6), rgb(99, 91, 181).
Aa
White text reads best on this color (5.68:1).
About this color
#635BB5 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.138 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.026 away. White text reads best on it, at 5.68:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #635BB5 |
| RGB | rgb(99, 91, 181) |
| HSL | hsl(245, 38%, 53%) |
| OKLCH | oklch(52.3% 0.138 284.6) |
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 #635BB5 | 5.68:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #635BB5 | 3.69:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #635BB5 text on white | 5.68:1 | AA | Lc 78.2 | Fine for body text |
| #635BB5 text on black | 3.69:1 | AA large text | Lc -23.5 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F1
oklch(88.4% 0.037 285.6)
-
Step 300
300
#BBBBEB
oklch(80.8% 0.067 284.8)
-
Step 400
400
#9997E1
oklch(70.7% 0.107 284.5)
-
Step 500
500
#817CD8
oklch(63.1% 0.136 284.3)
-
Step 600
600
#6C63C5
oklch(55.6% 0.148 284.7)
-
Step 700
700 (this color)
#635BB5
oklch(52.3% 0.138 284.6)
-
Step 800
800
#4A438A
oklch(42.7% 0.114 285)
-
Step 900
900
#3D396E
oklch(37.6% 0.089 284.7)
-
Step 950
950
#242241
oklch(27.1% 0.057 284.9)
#635BB5 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) | #3469B8 | 0.062 |
| Deuteranopia (no green cones) | #3164B3 | 0.062 |
| Tritanopia (no blue cones) | #496E7F | 0.118 |
| Achromatopsia (no color) | #676767 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635BB5
#635BB5
oklch(52.3% 0.138 284.6)
- #746C00
#746C00
oklch(52.2% 0.11 104.5)
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 #635BB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.026
- Slate Blue #6A5ACD ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.044
- French Blue #436BAD ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.068
- Dusky Blue #475F94 ΔE 0.069
- Warm Blue #4B57DB ΔE 0.070
Use #635BB5 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.