#635AB5
Closest named color: Iris (#6258C4). oklch(52.1% 0.139 285), rgb(99, 90, 181).
Aa
White text reads best on this color (5.73:1).
About this color
#635AB5 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.139 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.025 away. White text reads best on it, at 5.73:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #635AB5 |
| RGB | rgb(99, 90, 181) |
| HSL | hsl(246, 38%, 53%) |
| OKLCH | oklch(52.1% 0.139 285) |
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 #635AB5 | 5.73:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #635AB5 | 3.66:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #635AB5 text on white | 5.73:1 | AA | Lc 78.5 | Fine for body text |
| #635AB5 text on black | 3.66:1 | AA large text | Lc -23.3 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BBBBEB
oklch(80.8% 0.067 284.8)
-
Step 400
400
#9A97E1
oklch(70.8% 0.107 285.2)
-
Step 500
500
#827BD9
oklch(63.1% 0.139 285.1)
-
Step 600
600
#6C62C6
oklch(55.5% 0.15 284.9)
-
Step 700
700 (this color)
#635AB5
oklch(52.1% 0.139 285)
-
Step 800
800
#4A438B
oklch(42.8% 0.116 284.8)
-
Step 900
900
#3D396F
oklch(37.7% 0.09 284.6)
-
Step 950
950
#242241
oklch(27.1% 0.057 284.9)
#635AB5 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) | #3269B8 | 0.065 |
| Deuteranopia (no green cones) | #2F63B3 | 0.064 |
| Tritanopia (no blue cones) | #496D7F | 0.117 |
| Achromatopsia (no color) | #666666 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635AB5
#635AB5
oklch(52.1% 0.139 285)
- #736C00
#736C00
oklch(52.1% 0.111 105.1)
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 #635AB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.025
- Slate Blue #6A5ACD ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.044
- French Blue #436BAD ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.065
- Warm Blue #4B57DB ΔE 0.069
- Dusky Blue #475F94 ΔE 0.070
Use #635AB5 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.