#635591
Closest named color: Twilight (#4E518B). oklch(49% 0.095 293.3), rgb(99, 85, 145).
Aa
White text reads best on this color (6.48:1).
About this color
#635591 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.095 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 6.48:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #635591 |
| RGB | rgb(99, 85, 145) |
| HSL | hsl(254, 26%, 45%) |
| OKLCH | oklch(49% 0.095 293.3) |
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 #635591 | 6.48:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #635591 | 3.23:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #635591 text on white | 6.48:1 | AA | Lc 82.1 | Fine for body text |
| #635591 text on black | 3.23:1 | AA large text | Lc -19.8 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#D9D6E9
oklch(88.4% 0.026 293.1)
-
Step 300
300
#C1BCDC
oklch(81% 0.045 292.5)
-
Step 400
400
#A298CB
oklch(70.6% 0.074 293.4)
-
Step 500
500
#8C7EBD
oklch(63% 0.094 293.7)
-
Step 600
600
#7667A9
oklch(55.6% 0.101 293.3)
-
Step 700
700 (this color)
#635591
oklch(49% 0.095 293.3)
-
Step 800
800
#514676
oklch(42.7% 0.079 293.3)
-
Step 900
900
#433B5F
oklch(37.7% 0.061 293.5)
-
Step 950
950
#272338
oklch(27.1% 0.039 292.3)
#635591 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) | #435F93 | 0.050 |
| Deuteranopia (no green cones) | #455D8F | 0.047 |
| Tritanopia (no blue cones) | #59606C | 0.078 |
| Achromatopsia (no color) | #5E5E5E | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635591
#635591
oklch(49% 0.095 293.3)
- #61661C
#61661C
oklch(49.1% 0.095 113.2)
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 #635591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Dusk #4E5481 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.046
- Dusty Grape #545775 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.057
- Muted Purple #805B87 ΔE 0.057
- Denim #3B638C ΔE 0.066
- Dusty Purple #825F87 ΔE 0.066
Use #635591 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.