#634DBF
Closest named color: Iris (#6258C4). oklch(50.5% 0.171 287.5), rgb(99, 77, 191).
Aa
White text reads best on this color (6.27:1).
About this color
#634DBF is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.171 and its hue 288°. 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 6.27:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #634DBF |
| RGB | rgb(99, 77, 191) |
| HSL | hsl(252, 47%, 53%) |
| OKLCH | oklch(50.5% 0.171 287.5) |
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 #634DBF | 6.27:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #634DBF | 3.34:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #634DBF text on white | 6.27:1 | AA | Lc 80.9 | Fine for body text |
| #634DBF text on black | 3.34:1 | AA large text | Lc -21.0 | 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 700.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BDB9F4
oklch(81% 0.083 287.5)
-
Step 400
400
#9C92EE
oklch(70.6% 0.132 287.5)
-
Step 500
500
#8674E9
oklch(63.1% 0.17 287.6)
-
Step 600
600
#715AD7
oklch(55.7% 0.184 287.3)
-
Step 700
700 (this color)
#634DBF
oklch(50.5% 0.171 287.5)
-
Step 800
800
#4D3C97
oklch(42.6% 0.143 287.3)
-
Step 900
900
#403578
oklch(37.8% 0.11 287.5)
-
Step 950
950
#251F46
oklch(26.9% 0.07 287.8)
#634DBF 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) | #0063C3 | 0.095 |
| Deuteranopia (no green cones) | #005DBD | 0.093 |
| Tritanopia (no blue cones) | #44677E | 0.142 |
| Achromatopsia (no color) | #606060 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634DBF
#634DBF
oklch(50.5% 0.171 287.5)
- #6C6800
#6C6800
oklch(50.5% 0.108 107.1)
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 #634DBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.026
- Bluey Purple #6241C7 ΔE 0.029
- Slate Blue #6A5ACD ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.049
- Blurple #5539CC ΔE 0.054
- Warm Blue #4B57DB ΔE 0.057
Use #634DBF 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.