#634EA2
Closest named color: Twilight (#4E518B). oklch(48.7% 0.131 292.4), rgb(99, 78, 162).
Aa
White text reads best on this color (6.68:1).
About this color
#634EA2 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.131 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.052 away. White text reads best on it, at 6.68:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #634EA2 |
| RGB | rgb(99, 78, 162) |
| HSL | hsl(255, 35%, 47%) |
| OKLCH | oklch(48.7% 0.131 292.4) |
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 #634EA2 | 6.68:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #634EA2 | 3.14:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #634EA2 text on white | 6.68:1 | AA | Lc 82.8 | Fine for body text |
| #634EA2 text on black | 3.14:1 | AA large text | Lc -19.1 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#D9D5EF
oklch(88.4% 0.036 292.7)
-
Step 300
300
#C1BAE7
oklch(81% 0.063 292.1)
-
Step 400
400
#A295DA
oklch(70.7% 0.1 292.3)
-
Step 500
500
#8C79D0
oklch(63% 0.129 292.3)
-
Step 600
600
#7760BD
oklch(55.5% 0.141 292.6)
-
Step 700
700 (this color)
#634EA2
oklch(48.7% 0.131 292.4)
-
Step 800
800
#524184
oklch(42.7% 0.108 292.9)
-
Step 900
900
#43386A
oklch(37.7% 0.084 292)
-
Step 950
950
#27213E
oklch(27% 0.053 291.9)
#634EA2 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) | #2C5DA5 | 0.076 |
| Deuteranopia (no green cones) | #305AA0 | 0.072 |
| Tritanopia (no blue cones) | #535F70 | 0.107 |
| Achromatopsia (no color) | #5C5C5C | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634EA2
#634EA2
oklch(48.7% 0.131 292.4)
- #616500
#616500
oklch(48.7% 0.108 112.5)
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 #634EA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.052
- Iris #6258C4 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.062
- Blueberry #464196 ΔE 0.064
- Dusky Blue #475F94 ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.067
- Dusk #4E5481 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.071
Use #634EA2 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.