#631AAE
Closest named color: Chrysanthemum (#560BAD). oklch(42.8% 0.209 299), rgb(99, 26, 174).
Aa
White text reads best on this color (9.17:1).
About this color
#631AAE is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.209 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Chrysanthemum (#560BAD), ΔE 0.032 away. White text reads best on it, at 9.17:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.209) |
| Temperature | in between |
| Nearest name | Chrysanthemum (#560BAD) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #631AAE |
| RGB | rgb(99, 26, 174) |
| HSL | hsl(270, 74%, 39%) |
| OKLCH | oklch(42.8% 0.209 299) |
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 #631AAE | 9.17:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #631AAE | 2.28:1 | Fails | Lc 14.2 | Not readable |
| #631AAE text on white | 9.17:1 | AAA | Lc 89.8 | Fine for body text |
| #631AAE text on black | 2.28:1 | Fails | Lc -12.5 | Not readable |
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 800.
-
Step 50
50
#F7F3FF
oklch(97.1% 0.016 301.2)
-
Step 100
100
#EDE5FF
oklch(93.6% 0.036 299.7)
-
Step 200
200
#DFD0FF
oklch(88.5% 0.066 299.6)
-
Step 300
300
#CAB1FF
oklch(81% 0.111 298.6)
-
Step 400
400
#B183FF
oklch(70.7% 0.179 298.9)
-
Step 500
500
#A05BFF
oklch(63.1% 0.232 298.9)
-
Step 600
600
#8F2AF7
oklch(55.7% 0.271 299)
-
Step 700
700
#7A15D7
oklch(49.1% 0.252 299.1)
-
Step 800
800 (this color)
#631AAE
oklch(42.8% 0.209 299)
-
Step 900
900
#502089
oklch(37.7% 0.162 299.1)
-
Step 950
950
#2F1550
oklch(27% 0.103 299.7)
#631AAE 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) | #0048B2 | 0.132 |
| Deuteranopia (no green cones) | #0046AB | 0.132 |
| Tritanopia (no blue cones) | #504767 | 0.155 |
| Achromatopsia (no color) | #484848 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631AAE
#631AAE
oklch(42.8% 0.209 299)
- #4A5600
#4A5600
oklch(42.8% 0.1 118.6)
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 #631AAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chrysanthemum #560BAD ΔE 0.032
- Grape #7209B7 ΔE 0.033
- Rebecca Purple #663399 ΔE 0.052
- Purple Blue #5D21D0 ΔE 0.059
- Imperial Purple #480CA8 ΔE 0.060
- Violet Blue #510AC9 ΔE 0.061
- Blue With A Hint Of Purple #533CC6 ΔE 0.072
- Blurple #5539CC ΔE 0.073
Use #631AAE 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.