#631F79
Closest named color: Purple (#800080). oklch(38.8% 0.152 316.5), rgb(99, 31, 121).
Aa
White text reads best on this color (10.48:1).
About this color
#631F79 is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.152 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple (#800080), ΔE 0.064 away. White text reads best on it, at 10.48:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Purple (#800080) |
| Black text | 2.00:1 |
| White text | 10.48:1 |
Values
| HEX | #631F79 |
| RGB | rgb(99, 31, 121) |
| HSL | hsl(285, 59%, 30%) |
| OKLCH | oklch(38.8% 0.152 316.5) |
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 #631F79 | 10.48:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #631F79 | 2.00:1 | Fails | Lc 10.5 | Not readable |
| #631F79 text on white | 10.48:1 | AAA | Lc 93.5 | Preferred for body text |
| #631F79 text on black | 2.00:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#FAF2FC
oklch(97% 0.016 319.4)
-
Step 100
100
#F3E4F9
oklch(93.7% 0.032 316.4)
-
Step 200
200
#EACDF6
oklch(88.5% 0.063 316)
-
Step 300
300
#DEAAF2
oklch(81% 0.113 316.4)
-
Step 400
400
#CD77EB
oklch(70.7% 0.183 316.8)
-
Step 500
500
#BE4CE5
oklch(63.1% 0.233 316.2)
-
Step 600
600
#AA1FD2
oklch(55.5% 0.253 316.6)
-
Step 700
700
#9209B6
oklch(49.1% 0.235 316.6)
-
Step 800
800
#761293
oklch(42.6% 0.195 316.5)
-
Step 900
900 (this color)
#631F79
oklch(38.8% 0.152 316.5)
-
Step 950
950
#381245
oklch(26.9% 0.097 316.3)
#631F79 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) | #003B7C | 0.144 |
| Deuteranopia (no green cones) | #1F4177 | 0.129 |
| Tritanopia (no blue cones) | #62314A | 0.096 |
| Achromatopsia (no color) | #3F3F3F | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #631F79
#631F79
oklch(38.8% 0.152 316.5)
- #225200
#225200
oklch(38.9% 0.117 136.7)
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 #631F79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple #800080 ΔE 0.064
- Rebecca Purple #663399 ΔE 0.064
- Rich Purple #720058 ΔE 0.070
- Grape Purple #5D1451 ΔE 0.070
- Indigo #4B0082 ΔE 0.071
- Royal Purple #4B006E ΔE 0.072
- Velvet #750851 ΔE 0.081
- Dark Slate Blue #483D8B ΔE 0.082
Use #631F79 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.